outreach p5 science

7/22/2019 Outreach P5 Science

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Primary 5/6 ScienceTheme:Systems and Cycles

Mind-map PresentationsInquiring Questions

Application-Based Questions

Consulting Editor:

Dr Zhang Yong

BE, ME (Peking University), PhD (NUS)


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Outreach Edusys Pte LtdALL RIGHTS RESERVED. No part of this book and theaccompanying CDROM may be reproduced or transmitted in anyform or by any means, electronic or mechanical, includingphotocopying, CD duplication, replication, or by any information

storage and retrieval system, without permission in writing from thePublisher.

First Published 2010

ISBN: 978-981-4275-26-2

Published by:

Outreach Edusys Pte Ltd

(CRN: 200006571H)

Distributed by:

Outreach System Pte Ltd

20 Shaw Road, #07-03Singapore 367956

Tel: +65 91162024

Fax: +65 35107345

Email: [email protected]


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Preface

This book is written in accordance to the guiding principles of the 2008 Primary Science

Syllabus issued by Singapore Ministry of Education where the understanding and

application of scientific knowledge is revolved around daily life and society in the contextof the modern environment. Special attention is also devoted to the development of

scientific skill set and the appreciation of the processes involved in problem solving and

scientific investigation.

This enrichment book is to be used in conjunction with the textbook. To assist students in

retaining the necessary knowledge, so as to enable application, in particularly across

domains, we develop mind maps for each theme. These mind maps allow systematic

linking of the concepts, an important ingredient in the application of theory.

The application of concepts is achieved through carefully crafted scenarios based

questions requiring the students to observe and deduce the application of the scientific

knowledge. The difficulty of each question is also carefully checked to ensure it conform

with that of top well-known Singapore schools.


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Contents

Mind map Systems

Mind map Cycles

Mock Paper A (Systems) Paper 1 1

Mock Paper A (Systems) Paper 2 12

Mock Paper B (Systems) Paper 1 21

Mock Paper B (Systems) Paper 2 36

Mock Paper C (Systems) Paper 1 46

Mock Paper C (Systems) Paper 2 61

Mock Paper D (Cycles) Paper 1 72

Mock Paper D (Cycles) Paper 2 85

Mock Paper E (Cycles) Paper 1 95

Mock Paper E (Cycles) Paper 2 108

Mock Paper F (Cycles) Paper 1 118Mock Paper F (Cycles) Paper 2 130

Suggested Answers 141


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Mock Paper A (System) - Paper 1

Duration: 1 hr 30 min

Section A:For each of the questions, 1 to 30 four options are given. One of them is the

correct answer. Make your choice (1, 2, 3, or 4) and write the number corresponding to the

correct option in the bracket provided. (60 Marks)

1. Which of the following organism(s) is/are single-celled?

A. Paramecium

B. Yeast

C. Algae

D. Coral

(1) A and D (2) A and B

(3) B and C (4) D and C

( )

2. Miss Lim gave her pupils a table containing the properties of three cells: Cell A, CellB and Cell C. A tick () indicates that the cell possesses the mentioned properties.

A B C

Cytoplasm

Chloroplasts

Cell membrane

Cell wall

Nucleus

Sap

The pupils made some conclusions based on the information given. Which of the

conclusions is correct?(1) Only Cell B is a plant cell. (2) Only Cell C is a plant cell.

(3) Cell B and Cell C are plant cells. (4) All the cells are plant cells.

( )

3. Sarah examined a cell under a microscope and concluded

that it was a plant cell.

Why was Sarah able to conclude that it was a plant cell?

A. Because it has a cell wall.

B. Because it has a cell membrane.

C. Because it has chloroplasts.

D. Because it has a nucleus.

(1) A and C only (2) A and D only

(3) B and C only. (4) B and D only

( )


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4. A, B, C and D are blood vessels that connect the different organs in the human body.

Which of these vessels contain oxygen-rich blood?

(1) A and C (2) A and D

(3) B and C (4) C and D

( )

5. In an experiment, blood samples were taken from four different blood vessels.

The amount of oxygen in each sample was measured and represented in the graph

above. In the body, blood is circulated as shown in the diagram below.

Where was Sample A taken from?

(1) W (2) X

(3) Y (4) Z

( )

Lungs

Heart

Stomach

A

B

C

D


7/1523

6. The diagram below shows the digestive system of a human.

In which part(s), A, B, C or D does absorption of food

occurs in the body?

(1)A

(2)D

(3)B and C

(4)C and D

( )

7. The cell below is undergoing cell division. It completes one cell division every 8hours.

How many cells will there be after 2 days?

(1) 12 (2) 24

(3) 32 (4) 64

( )

8. Below are the cells of a living organism.

Which of the following statements are definitely true?

A. These are the cells of a plant.

B. The cells have no cell membrane.

C. They have a cell wall.

D. The nucleus controls the movement of materials in and out of the cell.

(1) A and C only. (2) B and C only

(3) A, C and D only (4) A, B, C and D

( )


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9. What makes the cell of a potatos leaf different from that of a human cheek?

(1) The presence of a chloroplast,

cell membrane and cell wall in

the leaf cell.

(2) The presence of a chloroplast, cell

membrane and nucleus in the leaf

cell.

(3) The presence of the cell wall,

nucleus and cell sap in the leaf

cell.

(4) The presence of the cell wall,

chloroplast and cell sap in the leaf

cell.

( )

10. Below is a diagram showing a cut stem of a plant that has been placed in colored

water for a few days.

Which part, A, B, C, or D, helps with the transportation of water from the roots to the

leaves?

(1) A (2) B

(3) C (4) D

( )

11. With regard to the processes that occur in a plant, which of the following

combinations is correct?

Process Product Factors needed for the process

(1) Evaporation Water Light, carbon dioxide

(2) Respiration Water, carbon

dioxide, energy

Oxygen, glucose

(3) Decomposition Carbon dioxide Light, oxygen

(4) Photosynthesis Water, sugar Oxygen, chlorophyll

( )

12. Look at the diagram on the right.

Name the part of the skeletal system

which protects this organ.

(1) Skull (2) Spine

(3) Rib cage (4) Hip bone

( )


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13. Which of the following senses help a blind man to identify fruits that are rotten?

A. Sight

B. Taste

C. Smell

D. Hearing

E. Touch

(1) B and C only (2) A and D only

(3) A and B only (4) C and D only

( )

14. Which of the following statements is/are true about respiration?

A. Heat is released during respiration.

B. Respiration takes place in the plants all the time.

C.

Food is broken down to produce oxygen during respiration.D. During photosynthesis, plants do not respire.

(1) A only (2) A and B only

(3) A, B and C only (4) A, B, C and D

( )

15. Which of the following organisms can breathe?

A. Paramecium

B. YeastC. Bacteria

D. Coral

(1) A and C only (2) B and D only


( )

16. Four pupils made some statements on the respiration process.

Aaron: Glucose and water are two products of the respiratory process.Brian: Respiration is a process of breaking down food in living cells.

Cindy: Respiration does not require the consumption of energy.

Donald: During respiration, energy and carbon dioxide are released.

Who has made the correct statements?

(1) Cindy and Donald (2) Brian and Donald

(3) Aaron and Brian (4) Brian and Cindy

( )


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17. The following reaction describes the process of respiration:

X + sugarY + Z + water vapour

What do the letters X, Y and Z represent?

X Y Z

(1) Starch Energy Carbon dioxide

(2) Energy Oxygen Sugar(3) Carbon dioxide Starch Oxygen

(4) Oxygen Carbon dioxide Energy

( )

18. Alisa set up the circuit on the

right. She was told that one or

more of the objects (A, B, C or D)

in the circuit was/were electrical

insulator(s).

When closing the switch, she

observed that only two bells in the

circuit rang. Which of the four

objects (A, B, C or D) were

electrical insulators?

(1) A only (2) D only

(3) A and B only (4) B and C only

( )

19. The picture on the right shows the cross section of a

leaf during photosynthesis.

Which one of the following is/are the function(s) of

the tiny opening Y found in the leaf?

A. It is the entrance for carbon dioxide into the leaf.

B. It helps to trap sunlight.

C. It is the exit for oxygen from the leaf.

D. It is the entrance and exit for water.


(3) A and D only (4) A and C only

( )


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20. Steve fixed 4 metal buttons M, N, O and P onto a board. Some buttons were connected toone another by some wire under the board. He uses a circuit tester to find out which metal

buttons are connected by wires.

The results of the test are presented in the table below.

Metal buttons tested Did the bulb light up?M and N No

M and O Yes

M and P Yes

N and O No

N and P No

O and P Yes

Which of the following is/are the possible connections of the wires between the

metal buttons?


(3) A, B and C only (4) A, B and D only

( )


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21. Which one of the following materials is a non-metal and a good conductor of

electricity?

(1) Copper (2) Carbon

(3) Nichrome (4) Porcelain

( )

22. In the diagram, only Bulb S lights

up. Given the below information,

which switches are open or

closed?

Switch A Switch B Switch C Switch D

(1) Open Closed Closed Open(2) Closed Closed Open Closed

(3) Open Open Closed Closed

(4) Closed Closed Open Open

( )

23. The diagram below shows four circuits. All of the batteries and bulbs are of the same

voltage.

Which one of the following shows the correct brightness of the bulbs A, B, C and D?

Brightness of bulb

Bright Brighter Brightest

(1) C A D

(2) C B A

(3) A D C

(4) B C D

( )


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24. Kate was given a circuit as shown.

She was asked to remove one of the two

batteries. What will she observe?

(1) The light remains as bright. (2) The light dims.

(3) The light goes off. (4) The light glows brighter.

( )

25. In the four circuits, the bulbs and batteries are

identical but the arrangement of the

components are different..

Arrange bulbs A, B, C and D in descendingorder of their brightness.

(1) C, B, D, A (2) D, C, B, A(3) A, C, B, D (4) D, A, C, B

( )

26. On a circuit board, there are five metal buttons as shown below.

James wanted to light up the bulb, so he decided to connect some of the buttons

together. Buttons A and C are already connected to the bulb. Which other points

should he connect so as to make the bulb light up?

(1) AB and CD (2) AE and BC

(3) AB and BC (4) CD and CE

( )

A

B C

D

E


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27. Which of the following circuit(s) will have a lit bulb only when one switch is closed?

(1) A and B only (2) A and C only

(3) B and C only (4) C and D only

( )

28. Study the circuit below.

Provided that only bells A, E and F rang, what can be concluded about X, Y and Z?

(1) Y and Z are electrical insulators. (2) Z is an electrical insulator.

(3)X, Y and Z are electrical

conductors.(4) X and Y are electrical conductors.

( )


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29. Four objects (A, B, C and D) were connected in an electrical circuit as below.

If only three bells rang, which one of the objects must be an electrical conductor?

(1) A (2) B(3) C (4) D

( )

30. Study the following circuits. The batteries and bulbs used are all identical.

Which of the circuits has the brightest bulb?

(1) A (2) B

(3) C (4) D

( )


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Mock Paper A (Systems) - Paper 2

Section B:For questions 31 to 46, write the answers in the spaces provided. (40 marks)

31. Read the information about genetic engineeringcarefully and decide whether each

of the statements below is true or false. Put a tick () in the appropriate column. [2]

Characteristics True False

a) It is a big breakthrough in system re-engineering by

removing the notion of chance in natural selection, and is

good for mankind in every aspect.

b) It has the potential to make ordinary familiar foods

become toxic.

c) Plants having gone through genetic engineering are

usually resistant to pests.

d) Selected parents with desired character traits are bred

together to obtain young with the desirable characteristics.

32. The table below shows properties of different cells A, B, C and D. A tick ()

indicates the presence of the mentioned component. [2]

A B C D

Cell wall

Nucleus

Chloroplast

Which types of cells can A, B, C and D be?

A B

C D

33. Supposed that you were a biotechnologist. You want to create a new species from the

fish cell and the plant cell below so that this new species contains characteristics

from both the fish and the plant.

a) What type of biotechnological technique should you use to obtain the objective? [1]


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b) Which of the parts labeled above should you focus your research on? Justify your

answer with reason. [2]

34. The human blood is classified into four main groups A, AB, B and O. During

surgery, blood can be given to the patient in order to save his life. However, cross-

group transfusion requires careful practice. The table below displays the suitable

blood groups for blood donors as well as blood recipients.

Blood type of person receiving blood

Blood type of donors A AB B O

A Yes Yes No No

AB No Yes No No

B No Yes Yes NoO Yes Yes Yes Yes

Kans blood group is B. He needs a blood transfusion urgently. Write down the

blood group(s) he can receive blood from. [2]

35. Complete the table below with two more differences between an artery and a vein.[2]

Artery Vein

1 contains blood that is rich in oxygen contains blood that is rich in carbon

dioxide

2 (i.a) (ii.a)

3 (i.b) (ii.b)


18/15214

36. The diagram below shows the digestive system of a human. [2]

List the name and main function of each part.

Part Name FunctionA

B

C

D

37.

a)

The diagram below shows the digestive system of a human.

Where in the digestive system does digestion end? [1]

b) There are muscles lining the walls of the gullet and stomach. What are the functions

of these muscles? [2]


19/15215

38. A, B, C and D are blood vessels

connecting the different organs found in

a humans body.

a) Which vessel(s) contain oxygen-rich blood? [1]

b)

Which vessel(s) contain carbon dioxide-rich blood? [1]

39. The setup below is used to represent the respiratory system of a human being.

a) Identify what the balloons and the rubber sheet represent. [2]

b)Describe the movement of each of your answers in (a) when air is being exhaled. [1]

Lun s

Heart

Stomach

A

B

C

D


20/15216


What will happen to the bulb if each switch is closed while the others are left open?

[3]

(a) S1:

(b) S2:

(c) S3:

41. Below is a circuit with four lighted bulbs. A switch is introduced to the circuit so that

one bulb will be switched off while the others still remain lighted.

Draw a switch on the diagram above to indicate where the switch should be placed.

[2]


21/15217

42. You are given 3 identical batteries and a bulb.

a) Draw 3 different arrangements of these items in order that the bulb in each of the

circuits has a different degree of brightness? You should take care not to destroy any

battery through incorrect connections. [1]

b) Which arrangement has the brightest bulb? [1]

c) Which arrangement has the dimmest bulb? [1]


22/15218

43. A pupil set up an experiment to find out the effect of temperature on the rate of

photosynthesis of an aquatic plant. The water in each flask was collected from the

same location of a pond and the same amount of plant was placed in each flask.

The graph below illustrates the relationship between the temperature of water and the

rate of photosynthesis of the plant.

a) What conclusion can you draw about effect of temperature on the rate of

photosynthesis of this aquatic plant from the graph? [1]

b) What do you think might happen to the living organisms in the pond if the

temperature of water increases to more than 40oC? Explain your answer. [2]


23/15219

44. Brian wanted to find out the amount of air retained by different types of soil. He

obtained three different types of soil, A, B and C from the school garden, Botanical

Gardens and the beach at East Coast respectively. He poured one cupful of soil into

the cylinders as shown.

Next, he poured a cupful of water into the cylinders at the same time. The diagrams

show Brians initial observations of the 3 set-ups after the water was poured into the

cylinders.

a) Which solid contained the greatest amount of air in it? [1]

b)Give an explanation for your answer above. [2]


24/15220

45. An experiment was set up as below in a dark room.

What can be observed with regards to the ink drop after 1 day? [2]

46. Jane asked herself whether plants could live in a closed environment. To figure out

the answer, she made a bottle garden for one week. To her surprise, the plants did

survive.

State two processes occurring in the plants that enable their survival in the bottle. [3]


25/15221

Mock Paper B (Systems) Paper 1


Section A:For each question 1 to 30 four options are given. One of them is the correct

answer. Make your choice (1, 2, 3, or 4) and write the number corresponding to the correct

option in the bracket provided. (60 Marks)

1.Which graph best describes the level of oxygen and carbon dioxide in the air of the

forest over a period of 24hours.

(1)

(2)

(3)

(4)

( )


26/15222

2. The picture below shows how the leaf of a plant carries out photosynthesis.

The arrows indicate the movement of different substances in and out of the leaf.

What are the substances represented by A, B, C and D?

A B C D

(1) Water Sugar Carbon dioxide Oxygen

(2) Carbon dioxide Oxygen Sugar Water

(3) Sugar Carbon dioxide Water Oxygen

(4) Sugar Water Oxygen Carbon dioxide

( )

3. The diagram below shows the carbon cycle.

Which one of the following identifies the correct processes A and C?

A C

(1) Photosynthesis Decomposition

(2) Photosynthesis Respiration

(3) Respiration Decomposition

(4) Respiration Photosynthesis

( )


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4. Which of the following aquatic plants will be most affected, if there is a sudden

increase in the population of water hyacinth on the pond below?

(1) Moss (2) Water lily

(3) Hydrilla (4) Cattail

( )

5. When carefully examining the under surface of a leaf, we can see many tinyopenings as below. These openings are called stomata.

What are the functions of these stomata?

A. They facilitate the exchange of gases.

B. They are the gates controlling the entrance and exit of mineral salts in and

out of the leaf.

C. They trap sunlight for photosynthesis.

D. They allow water vapor to escape.

(1) A and D only. (2) B and C only.

(3) A, C and D only. (4) A, B and C only.

( )


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6. Which conclusion is most accurate regarding the photosynthesis and respiration of a

plant?

(1) Photosynthesis can only be

carried out during daytime; and

respiration is carried out at night.

(2) Respiration can be carried out

during daytime; and

photosynthesis happens at night.

(3) Photosynthesis can be carried

out as long as there is light; but

respiration can only be carried

out at night.

(4) Photosynthesis can only occur

when there is light; but respiration

occurs all the time.

( )

7. Jay was told that carbon dioxide was needed for photosynthesis. He decided to

confirm this by an experiment described below. 4 identical plants were used and put

in containers in different conditions. A, B and C were exposed to sunlight; while D

was left in the dark. After a few days, he took some leaves from each plant and letthem undergo starch tests.

Which two set-ups should he compare to achieve his aim?

(1) A and B only. (2) A and C only.

(3) B and C only. (4) C and D only. ( )


29/15225

8. A pupil was given some batteries, bulbs and wires. He made different circuits and

recorded the results as shown in the graph below.

Which of the following could possibly represent X and Y?

X YA Number of bulbs Voltage of bulbs

B Voltage of batteries Number of bulbs

C Voltage of bulbs Brightness of bulbs

D Number of bulbs Brightness of bulbs

(1) D only. (2) A and B only.

(3) B and C only. (4) C and D only.

( )


Arrange the circuits in descending order of brightness of the bulbs.

(1) A, B, C, D. (2) C, D, A, B.

(3) B, A, C, D. (4) D, C, A, B.

( )

X


30/15226

10. Four objects (A, B, C and D) were connected in an electrical circuit as shown below.

Provided that there was one insulator, what was the maximum number of the bells

that could have rung?

(1) 2 (2) 3

(3) 4 (4)Impossible to tell from the

information given

( )

11. Study the diagram below. Provided that the system is a replicate of the human

respiratory system.

Can you relate the organ of the respiratory system that the baloons represent?

(1) Lungs (2) Wind Pipe

(3) Diaphragm (4) None of them.

( )


31/15227

12. Which of the following circuit(s) will have a lit up bulb only when both the switches

are closed?

(1) A only (2) B and C only

(3) D only (4) C and D only( )

13. Kate was given a circuit as below.

An additional battery was also given. Among the 4 possibilities below, which circuit

has a bulb that is not brighter than the original circuit?


(3) A and D only. (4) C and D only

( )


32/15228

14. An experiment was set up to find out the effect of different types of conductors to the

loudness of the bell.

In order to get the correct results, which variables should be kept the same?

A.Number of batteries

B. Type of bell

C. Type of conductorsD.Number of switches

E. Voltage of bulb


(3) A, B, D and E only (4) A, B, C, D and E

( )

15. An experiment was set up to test the electrical conductivity of some materials (A, B,

C or D). 4 different objects made of the mentioned materials were placed into the

circuit one by one.

The brightness of the bulb in each case was recorded in the following table.Material Brightness of bulb

A Bright

B Very bright

C Unlit

D Dim

Which material is most suitable for making a covering for electrical wires?

(1) A (2) B

(3) C (4) D

( )


33/15229

16. Below is a closed circuit.

Although one bulb was fused, the other three continue to light up. Which bulb might

have fused?

(1) A (2) B

(3) C (4) D ( )

17. Below is a circuit with four lighted bulbs. A switch has to be introduced to the circuit

such that one bulb will be switched off while the others still remain lighted.

At which position (A, B, C or D) should the switch be inserted?

(1) A (2) B

(3) C (4) D

( )


34/15230

18. Study the circuit given below.

Which of the following switches when closed will produce bulbs with different

brightness as compared to the rest of the combinations?

(1) S1 and S2 (2) S1 and S3(3) S2 and S3 (4) S4

( )

19. Study the diagram below.

If all the switches are closed and bulb E is fused, how many bulbs will light up?

(1) 6. (2) 2.

(3) 4. (4) None of the bulbs will light up.

( )

20. How does respiration helps in the survival of a living thing?

(1) Respiration uses food to release

energy necessary for survival.

(2) Respiration produces carbon

dioxide which is needed by plants

for survival.

(3) Respiration helps to digest the

food necessary for the survival

of all living things.

(4) Respiration produces oxygen

which is necessary for the survival

of all living things.

( )


35/15231

21. The setup below is used to represent the respiratory system of the human being.

What can a pupil observe in the above setup if air is being exhaled?

Movement of the rubber sheet Balloons

(1) Downwards Expand

(2) Upwards Expand

(3) Downwards Contract

(4) Upwards Contract

( )

22. Below is the humans respiratory system.

Based on the diagram above, which of the following statements are true?

A. A allows air to enter and leave the body system.

B. B is the main pipe that air enters and leaves.

C. C contains tiny air sacs surrounded by many tiny blood vessels.

D. B cleans the air by trapping impurities before air enters the system.


(3) A, B and C only (4) A, B and D only

( )


36/15232

23.

The diagram above shows the exchange of gases between animals and plants.

When does this exchange occur?

(1) All the time. (2) During daytime.

(3) As long as there is light. (4) During nighttime.

( )

24. Below is the digestive system of a human.

Which one of the following correctly identifies the parts where digestion of food and

absorption of large amount of water take place?

Digestion of food Absorption of large amount of water

(1) A, B, C, D F

(2) A, D, E F(3) D, E, F G

(4) A, C, D G

( )


37/15233

25. Study the chart and match the parts of the body to the correct body systems A, B and

C.

A B C

(1) Circulatory Respiratory Skeletal

(2) Respiratory Skeletal Circulatory(3) Skeletal Circulatory Respiratory

(4) Circulatory Skeletal Respiratory

( )

26. Below is the humans digestive system.

Which of the following statement(s) is/are true?

A. Food digestion starts at A.

B. Food that cannot be digested will be removed at F.

C. Digestive juices are produced at A, E and D.

D. Water and some mineral salts are absorbed at G.

E. Food is broken down into substances that can be used by the body at F.

(1) A and B only (2) B, C and D only

(3) A and C only (4) A, B, D and E only

( )

Body systems

A B C

Veins

Arteries

Heart

Spine

Rib-cage

Skull

Lungs

Windpipe

Nostrils


38/15234

27. In an experiment, blood samples were taken out from four different blood vessels.

The amount of oxygen in each sample was examined and graphed as below.

In the body, blood is circulated as shown in the diagram.

Where was sample C taken out from?

(1) W (2) X(3) Y (4) Z

( )

28. Information on three types of cells (A, B and C) is given in the table below. A tick

() indicates the presence of the mentioned organelle.

Parts of cell Cell A Cell B Cell C

Chloroplast

Nucleus

Cell wall

Which of the following statements is/are true about the three cells (A, B and C)?A. Cell A is most likely to belong to an animal.

B. Cell B can be found in the root of a plant.

C. Cell C is most likely to be able to produce oxygen.

(1) B only (2) C only

(3) A and C only (4) A, B and C

( )


39/15235

29. Below is a cross section of a stem from a normally growing plant.

Which substances do parts G and H of the stem transport respectively?

G H

(1) Water and dissolved

mineral salts

Food

(2) Food Water and dissolved

mineral salts(3) Food and carbon dioxide Water and oxygen

(4) Water and oxygen Food and carbon dioxide

( )

30. The diagram below shows the cell of a green plant. What is the function of A?

(1) It maintains the cells shape. (2) It controls the activities in the cell.

(3) It assists movement of the

substances within the cell.

(4) It controls the substances moving

in and out of the cell.( )


40/15236

Mock Paper B (Systems) Paper 2


31. Below is a garden in a bottle which is placed under plenty of sunlight. The bottle

was completely sealed so that no air and water can enter it. It was observed that the

plants remain alive for more than one month.

Explain how the plant survived even though no air and water can enter the bottle. [2]

32. A, B, C and D are different processes to produce or remove carbon dioxide from the

air.

What are A, B, C and D processes respectively? [2]

A: ______________________

B: ______________________

C: ______________________

D: ______________________

Carbon dioxide

in the air

Plants Animals

Dead matter

A

B

D

C


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33. Alice conducted an experiment as described below.

An equal number of goldfish were put into two identical fish bowls (A and B). The

same amount of food was given to the fish in both bowls. After a few days, she

observed that the goldfish in bowl A gathered near the water surface.

Why did the fish gather near the surface? [3]

34. A fish was put in water with an air pump which can provide oxygen at different

rates. The amount of oxygen dissolved in the water was measured and the number of

gill beats was counted by carefully observing the fish. The results are shown in the

table below.

Amount of dissolved

oxygen per cm3of water

Number of gill

beats per minute

18.50 10

16.10 14

14.46 17

12.56 18

12.16 21

a) What can be concluded about the relationship between the amount of dissolved

oxygen in the water and the number of gill beats? [1]

b) Justify your answer above with reason(s). [2]


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35. Below is a closed circuit.

a) Where can we insert a switch so that all bulbs are turned on and off at the same time.

Mark an X at the appropriate position for the switch on the circuit. [1]

b)What will happen to the other bulbs if bulb D is fused? [1]

36. On a circuit board, there

were three hidden wires

joining the metal points

together. A pupil used

the following circuit

tester to find out thehidden wires.

Different pairs of points

were connected with the

tester and the results

were recorded as below.

Points Result

A and B Bulb lights upA and C Bulb lights up

A and D Bulb lights up

B and D Bulb lights up

B and E Bulb does not light up

C and E Bulb does not light up

D and E Bulb does not light up

Based on the results above, show on the diagram how these metal points are

connected. [3]


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37. An experiment was set up to test the electrical conductivity of some materials (A, B,

C or D). 4 different objects made of the mentioned materials were placed into the

circuit one by one.

The brightness of the bulb in each case was recorded in the following table.Material Brightness of bulb

A Bright

B Very bright

C Unlit

D Dim

a) Which material is most suitable for making a lightning conductor? [1]

b) Which material is most suitable for making a covering for electrical wires? [1]


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38. 4 objects W, X, Y and Z were tested for their electrical conductivity. Different

circuits were set up to conduct the experiment.

The bulbs in set-up A and B did not light up, while the bulbs in set-up C and D lit up.

a) Which object(s) is/are electrical conductor(s)? [1]

b)Which object(s) is/are electrical insulator(s)? [1]

c) Study the below circuit.

How many bulbs will light up in the circuit above when the switch is closed? [1]


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39. James constructed a traffic light circuit as below.

However, he found out that he could not get each bulb to light up one at a time. What

could he do to reconstruct the circuit so that each colored bulb could be light up at a

time? Using the same components (3 switches, 3 bulbs, and some wires), draw the

circuit in the space below. [2]

40. State the main functions of each part A, B and C. [3]


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41. The bar charts below show the digestion of three

types of food A, B and C, in the different parts

of the digestive system.

At the start In the mouth

In the stomach In the small intestine

a) Based on the graph above, in which organ(s) was/were digestion of food B mostly

carried out? [1]

b)

Among the three types of food, soup, biscuit and hamburger, identify the best

possible match of these three types of food and Food A, B and C. [1]

DigestedfoodFoodA

FoodBFoodC

Key


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42. A plant having white

flowers was put into a

beaker filled with blue-

colored water. Two

flowers, X and Y, were

observed. Only X turned

blue after 2 hours while

Y remained white. A

pupil immediately made

two cuts near X and Y.

Describe the cross-section at the stems at cut 1 and cut 2. [2]

43. Below are some blood vessels and the direction of blood flow through them.

a) Which organ does blood in K finally return to? [1]

b)What is the main difference between the blood in vessels M and K? [1]

c)

Blood vessel P has thinner walls than blood vessel M. State the function of vessel P

and explain why P has thinner walls. [1]


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44. When examining some plant cells under a microscope, Aaron observed the following

cell.

Match the correct part of the cell (A, B, C, D, E) and its description. [2]

a.______ controls cellular activities.

b.______ controls what goes in and out of the cell.

c.______ gives support to the plant cell and helps to maintain its shape.

d.______ converts light energy to chemical energy.

e.______ stores water, food and minerals for the cell.

45.

a)

This is a plant cell.

Assume that you are a genetic expert.

You have just found out that insertion of

some genetic material would enable the

plant cell above to produce a new

substance T. In the above diagram, label

and name the part of the cell that you

should insert to the genetic material. [1]


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b) After having inserting the material, you knew that substance T had been produced

inside the cell. However, further studies concluded that there was no presence of T in

the surrounding area. What is wrong? Is there any part of the cell that prevents the

escape of T to the environment? If so, what is it? [2]

46. The drawings below came from an observation of 2 different types of cells under the

microscope.

a) Which group of cells, A or B, comes from a plant?[1]

b) Justify your answer above with a reason.[2]


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Mock Paper C (Systems) Paper 1





1. Below is a cell of a cat. Which part(s) of the cell determine(s) the color of the cats

fur?

(1) A only (2) C only

(3) A and D only (4) A, B and C only

( )

2. The cell below is undergoing cell division.

How many cells will there be after 5 rounds of

division?

(1) 5 (2) 10

(3) 32 (4) 64

( )

3. On which part of the plant would the cell below

be found?

(1) Lotus root. (2) Leaf blade.

(3) Tree bark. (4) Rubber seed. ( )


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4. Which of the following organelles can be found in both plant and animal cells?

A.Nucleus

B. Cytoplasm

C. Cell wall

D. Cell membrane

(1) A and C only. (2) B and D only.

(3) A, B and D only. (4) B, C and D only.

( )

5. Which of the statement(s) is/are true?

A. The cell membrane supports the cell and gives it the shape.

B. Chlorophyll, which traps light energy, is kept in the chloroplast.

C. Movements of the substances in and out of the cell are controlled by the

cytoplasm.

D. The activities in the cells are controlled by the nucleus.

(1) B only. (2) B and D only.

(3) A and C only. (4) A, B, C and D only. ( )

6. The table below shows properties of different cells A, B, C and D. A tick ()

indicates the presence of the mentioned component.

Which of the following most accurately shows what type of cell A, B, C, and D are?

A B C D

Cell wall

Nucleus

Chloroplast

A B C D

(1) Animal skin

cell

Root cell Red blood cell Leaf cell

(2) Leaf cell Red blood cell Root cell Animal skin

cell

(3) Leaf cell Root cell Red blood cell Animal skin

cell

(4) Leaf cell Animal skin

cell

Red blood cell Root cell

( )


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7. The pictures below show different cells under microscopic view. They are not drawn

to scale.

Which of the above cell(s) is/are single-celled organism(s)?

(1) A only (2) B only

(3) A and D only (4) B and C only( )

8. A, B, C and D are all blood vessels, connecting the different organs in a human.

Which of these vessels contain oxygen-deprived blood?

(1) A and B. (2) A and D.

(3) B and C. (4) C and D.

( )

Lungs

Heart

Stomach

A

B

C

D


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9. In an experiment, blood samples were taken out from four different blood vessels.

The amount of oxygen in each sample was examined and graphed as above.

In the body, blood is circulated as shown in the diagram.

Where was sample B taken out from?

(1) W. (2) X.

(3) Y. (4) Z.

( )


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10. A plant having white flowers was put into a beaker filled with blue-colored water.

Two flowers, X and Y, were observed. Only X turned blue after 2 hours while Y

remained white. A pupil immediately made two cuts near X and Y.

Which of the following shows the correct cross-section of the stems at the cuts?

(1) (2)

(3) (4)

( )


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11. A simplified diagram of the humans circulatory system is displayed below. The

arrows represent the direction of the flow of blood in the body.

Which blood vessel (A, B, C or D) contain the greatest amount of carbon dioxide?

(1) A (2) B

(3) C (4) D

( )

12. Below is the human digestive system

Which of the following correctly describes the processes of

digestion at A, B, C and D?

A B C D

(1) Food is

softened with

saliva

Digested food

is absorbed

into the

bloodstream

Food is further

broken down into

simpler substances

Waste materials as

passed out of the

body

(2) Saliva mixes

with the food

in the mouth

Digestive

juices soften

the food

Food is moved into

D to be absorbed

into thebloodstream

Digested food is

absorbed into the

bloodstream

(3) Chewed food

is swallowed

Food is mixed

with the blood

Food is moved into

D to be absorbed

into the

bloodstream

Digested food is

absorbed into the

body

(4) Digestion

begins with

the help of

saliva

Food is broken

down into

simpler

substances

Water and some

mineral salts are

absorbed

Digestion ends with

food being

absorbed into the

bloodstream

( )

Heart

Other parts

of the bodyLungs

DC

BA


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13. The graph below shows how much undigested food is remained when passing

through different parts of the human digestive system (A, B and C).

In the diagram below, which of the letters, W, X, Y or Z best represents part C?

(1) W (2) X

(3) Y (4) Z

( )

14. Which of the following statements about fungi are true?

A. Jews ears obtain food from the log that they grow on.

B. Fungi can grow on both living and dead organisms.

C. Photosynthesis can happen in fungi.

D. Bread mould is a fungus that reproduces from spores.

E.

(1) B and C only. (2) A and D only.

(3) A, B and D only. (4) A, B and C only.

( )

A

B

C

0

100

Percentageofundigestedfood

Mouth Parts of the digestive system


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15. Jane asked herself whether plants could live in a closed environment. To figure out

the answer, she made a bottle garden for one week. To her surprise, the plants did

survive.

What processes occurring in the plants enable their survival in the bottle?

A. The plants photosynthesize to make food in the presence of light.

B. Respiration and transpiration happen all the time.

C. A continuous water cycle takes place in the bottle.

(1) A and B only. (2) A and C only.

(3) B and C only. (4) A, B and C.

( )

16. Below is the process of respiration. What do A and B in the diagram represent?

A B

(1) Digested

Food

Energy

(2) Energy Food

(3) Water Energy

(4) Light Energy

( )

A

+Oxygen

B

+

Carbon dioxide

+

Water


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17. Alice connected up the following circuit using three high power alkaline batteries

and a bulb. What will she observed after a minute?

(1) The bulb lighted up brightly. (2) Nothing happened.

(3) The bulb flickered on and off. (4) The batteries feel very hot.

( )


An additional battery was also given. Among the 4

possibilities below, which circuit has a bulb that has

the same brightness as the original circuit?

(1) A only. (2) A and B only.

(3) B and C only. (4) C and D only.

( )


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19. Alisa set up the circuit below. She was told that one or more of the objects (A, B, C

or D) in the circuit were electrical insulators.

When closing the switch, she observed that only two bells in the circuit rang. Which

of the four objects (A, B, C or D) were electrical conductors?

(1) A only (2) D only

(3) A and D only (4) B and C only

( )

20. Which of the following circuit(s) will have a lit bulb even when none of the twoswitches is closed?

(1) A only (2) B and C only

(3) D only (4) C and D only

( )


60/15256


Provided that five out of six bells rang, which one among X, Y and Z is electrical

insulator(s)?

(1) X (2) Y

(3) Z (4) None of them

( )


Which of the circuits has the dimmest bulb?

(1) A (2) B

(3) C (4) D

( )


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23. Study the diagram below.

If all the switches are open, how many bulbs will light up?

(1) 1 (2) 2(3) 4 (4) None of the bulbs will light up.

( )

24. 4 objects W, X, Y and Z were tested for their electrical conductivity. Different

circuits were set up to conduct the experiment.

The lights in set-ups A and B did not light up; while the lights in set-ups C and D lit

up.

What can be concluded from the experiment?

(1) Y is an electrical insulator. (2) W and Y are electrical conductors.

(3) X and Y are electrical insulators. (4) X, Y and Z are electrical

conductors.

( )


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25. Study the circuit below

In order to have the smallest number possible of bulbs light up, which of the items

(W, X, Y or Z) should be an electrical insulator?

(1) W (2) X

(3) Y (4) Z

( )

26. Below is an electrical circuit.

State the correct order in which the switches should be closed so that bulb A will

light up first, followed by bulb B and then bulb C?

First switch to

close

Second switch to

close

Third switch to

close

(1) 1 2 3

(2) 3 1 2

(3) 3 2 1

(4) 2 1 3

( )


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27. Study the circuit given below.

Which of the following two switches when closed will produce the brightest light?

(1) S1 and S2 (2) S1 and S3

(3) S2 and S3 (4) S3 and S4

( )

28. Liquid X can turn from blue to red in the presence of carbon dioxide. Susan setup an

experiment as below.

She blew some air into the test tube. What was her assumption and purpose to do so?

Assumption Purpose to show that(1) Exhaled air contains carbon

dioxide

Exhaled air contains carbon

dioxide

(2) Exhaled air contains carbon

dioxide

Liquid X changes color in the

presence of carbon dioxide

(3) Liquid X has effect on carbon

dioxide

Exhaled air contains carbon

dioxide

(4) Liquid X has effect on carbon

dioxide

Liquid X changes color in the

presence of carbon dioxide

( )


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29. Oxygen and carbon dioxide continuously move in the life cycle of living things as

described in the diagram below.

Which statement correctly interprets the diagram?

(1) Water is not required for plant

photosynthesis.

(2) Carbon dioxide is produced by

plant photosynthesis.

(3) Oxygen is a by-product of plant

photosynthesis.

(4) Animal respiration produces

glucose and water.

( )

30. A, B, C and D are different processes to produce or remove carbon dioxide from the

air. What are A, B, C and D processes respectively?

A B C D

(1) Respiration Photosynthesis Respiration Decomposition

(2) Photosynthesis Respiration Respiration Decomposition

(3) Decomposition Respiration Photosynthesis Respiration

(4) Decomposition Photosynthesis Respiration Respiration

( )

Glucose

Oxygen

Water

Carbon dioxide

AnimalPlant photosynthesis

SUN


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Mock Paper C (Systems) Paper 2Section B:For questions 31 to 46, write the answers in the spaces provided. (40 marks)

31. Look at the diagram below carefully.

a) Which part of the cell, A, B, C or D enables you to identify whether it is a plant cell?

Why?[1]

b) Is the cell able to make food? Justify your answer with reasons. [1]

32. Jane was looking at the single-

celled organism below under a

microscope. This organism is

known as Chlamydomonas.

Jane thinks that this organism is ananimal. Is she correct? Justify your

answer with a reason. [2]


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33. The diagram below shows the circulatory system of a human. The arrows represent

the direction of blood in the body.

Which blood vessels (A, B, C or D) contain the greatest amount of carbon dioxide?

Explain your answer. [2]

34. Rings of different thickness were cut and removed from the stem as shown below.

The plant was watered daily and kept in the dark for 4 days. Both leaves A and B

were covered with black paper on both sides. After that, the plant was placed under

strong sunlight for 12 hours.

HeartOther partsof the bodyLungs

C

BA


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After 12 hours, both leaves A and B were tested for starch using iodine. Shade the

parts where iodine turned dark blue. [2]

35.

a)

Study the diagram of the digestive system of a human

carefully.

Where in the digestive system does digestion first occur? [1]

_____________________________________________

b) At which part (A, B, C or D) is digested food absorbed into the bloodstream? [1]

c) It is crucial that digested food be absorbed into the bloodstream. Explain why. [1]


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36. Study the statements below and put a tick () in the appropriate box.[2]

Statement True False Not possible

to tell

(a) The stomata allows exchange of

gases during photosynthesis and

respiration

(b) The guard cells control theamount of water lost through

transpiration

(c) The stomata is found only on the

leaves of a plant

(d) The stomata consists of one guard

cell

37. Alex set up an experiment as shown below to study certain properties of object X.

a) When the circuit above is switched on, what property of X can be tested? [1]

b) Alexs teacher asked her to perform another experiment to test the same property of

X. She keeps on thinking but hasnt found an answer yet. Can you help her? [2]


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38. A circuit was set up as below.

A tick () indicates that the bulb lights up; while a cross () indicates that the bulb

does not light up. Complete the table below with an appropriate symbol.[1]

Circuit orientation State of Bulbs

A B C

Switch X is open,

switch Y is closed

Switch Y is open,

switch X is closed

How should three identical batteries and one bulb be connected so that the bulb willshine the brightest?[2]


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39. Study the diagram below and answer these questions.

a) If all the switches are closed and bulbs A and B are fused, how many bulbs will light

up? [1]

b) If all the switches are open, which are the bulbs that will light up?[1]

c) Which bulb(s) do(es) Switch 1 control(s)?[1]


Arrange the circuits in increasing order of brightness of the bulbs. [2]


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41. You are given a battery, two bulbs and two pieces of wires. Using not more than 4

wires each, connect the battery to the bulbs so that

The bulbs in arrangement A are brighter than those in arrangement B.

In arrangement A, even if one bulb blows, the other can still light up.

Arrangement A [1]

Arrangement B [1]


72/15268


An additional battery was also given. Draw three possible circuits with this

additional battery, and rank them according to the brightness of the bulb. [2]


73/15269

Look at the diagram below. What do A, B, C and D represent? [3]

A:

B:

C:

43.

D:

44. The diagram below shows the exchange of gases between living things and the

surroundings.

a) Which two arrows in the above diagram show plants undergoing the process of

converting light into chemical potential energy? [1]


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b) Name the product that is broken down in plants when the process indicates by arrows

5 and 6 takes place. [1]

45. A hypothesis was given to a group of pupils: The presence of water plants increases

the survival rate of aquatic animals. These pupils conducted an experiment to test

this hypothesis with the following items. They left the set-ups alone for two weeks.

a) What were the two set-ups needed to conduct a fair test? Draw in pencil in the space

provided to show how these pupils should set up the experiment. [1]

b) What should the pupils observe at the end of the experiment? Why? [2]


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46. Sam wanted to test if liquid X is an electrical conductor. He was provided with the

following items.

a) How could Sam set up these items to identify the electrical conductivity of liquid X.

Illustrate your answer in the box below. [2]

b) Using the experiment, list two ways for Sam to tell whether liquid X is an electrical

conductor or not. [2]


76/15272

Mock Paper D (Cycles) Paper 1





1. Four samples of water were taken from four different rivers, A, B, C and D. They

were tested for chemical Z which is a poison to living things. The results are shown

in the graph below.

According to the graph, which river would contain the greatest number of living

things?

(1) A (2) B(3) C (4) D

( )

2. Consider the diagram on the

right.

What can be concluded about

how the water droplets form

on the plastic cover?

(1) The water evaporated and

became water vapour which

condensed on the cooler surface

of the plastic cover.

(2) The water vapour from the air

outside condensed on the plastic

cover.

(3) The plastic cover was wet and

water gathered on the surface of

the plastic cover.

(4) The warm water vapour inside the

plastic cover condensed on the

cool surface of the plastic cover.( )

Amount of

chemical Z

River A River B River C River D River


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3. Below is the water cycle.

Which of the following best describes A, B, and C?

A B C

(1) Evaporation Precipitation Condensation

(2) Precipitation Condensation Evaporation

(3) Evaporation Condensation Precipitation

(4) Condensation Precipitation Evaporation

( )

4. A pupil conducted the experiment below to find the volume of Object A.

His teacher told him that the amount collected in the beaker was not the accurate

volume of Object A. What could the pupil do to improve the accuracy of the

measurement?

(1) Repeat the experiment 3 times

and take the average value.

(2) Measure the amount of water left

in the displacement can.

(3) Subtract the amount of water in

the beaker from the total volume

of water in the displacement can.

(4) Pour in more water before the

experiment so that the water level

is just below the opening.

( )

RainWater bodies such

as the sea, rivers

and lakes

Water vapourClouds

A

B

C


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5. James took water from 3 different parts of a river and filled it into 3 different

beakers. He then placed 10 fish and an equal amount of hydrilla into each beaker.

During the experiment, an equal amount of food was given to the fish at the same

time. The three beakers were placed at the same place. He recorded the number of

fish in each beaker after 20 days.

Water source Number of fish left after 20 days

Part A of the river 10

Part B of the river 5

Part C of the river 2

Which part of the river was the most polluted?

(1) Part A (2) Part B

(3) Part C (4) Impossible to tell

( )

6. An experiment was conducted to study the rate of evaporation of water placed in

different containers with different exposed surface areas. 80 ml of water was poured

into each container.

Which container would have the greatest rate of evaporation?

(1) Container A (2) Container B

(3) Container C (4) They have the same rate of

evaporation

( )

7. When an oil spillage occurs, the marine life in a large area is badly affected. Some

seabirds are also found dead on the beach.Which of the following statement(s) about the death of the seabirds is/are true?

A. They drink contaminated water.

B. They eat the fish which has been poisoned by the oil.

C. Their feathers get soaked with oil and they cannot fly.

D. They are suffocated by the oil fumes.

(1) B only. (2) A and D only.

(3) A, B and C only. (4) A, B, C and D.

( )


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8. When slowly putting a hollow and inverted cylinder A

into a basin of water, Paul observed the following.

He then slowly put another similar-sized empty inverted

cylinder B with holes at its base to the basin. Which of

the following describes the result correctly?

(1) (2)

(3) (4)

( )

9. Below is a classification chart.

Complete the above chart by choosing the correct option.

A B C D

(1) Asexual

reproduction

Sexual

reproduction

Corn Tomato

(2) Sexual

reproduction

Asexual

reproduction

Yeast Pineapple

(3) By spores By seeds Mushroom Watermelon

(4) By spores By seeds Yeast Banana

( )

Method of reproduction

A B

Birds nest fern

C

Grapefruit

D


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10. Study the table below carefully.

Period after

fertilization

Stage of development

3 weeks Head is formed. Spinal cord and

heart start to develop.

6 weeks Brain grows rapidly. Eyes and earsstart to develop. Limbs start to

form.

12 weeks The foetus has almost all the

external features of a baby.

9 10 months Birth

From the table above, what is the earliest period after fertilization that a mother can

start feeling its foetuss kicks?

(1) 1st

week (2) 3rd

week(3) 5thweek (4) 13thweek

( )

11. With regard to the reproduction of animals, which of the following statements are

true?

A. The male animals produce sperms.

B. Many sperms fertilize one egg.

C. Fertilization always takes place inside the female body.

D. In the female human body, fertilization occurs in the fallopian tube.

(1) B and D only. (2) A and D only.

(3) A, C and D only. (4) A, B, C and D.

( )

12. The diagram shows a sperm cell.

Which one of the following is true about the

function of the nucleus and flagellum

respectively?

Nucleus Flagellum

(1) Keeps the cell firm Acts as a feeler

(2) Carries genetic materials Controls activities in the cell

(3) Controls activities in the cell Aids in movement

(4) Acts as the center of the cell Keeps the cell firm

( )


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13. Which of the statement(s) about a developing human foetus is/are true?

A. It is made up of only one kind of cells.

B. It contains genetic materials from both parents.

C. It takes one year for the foetus to fully develop and to be born.

D. It is developed from one fertilized egg.

(1) D only. (2) A and D only.

(3) B and D only. (4) A, C and D only.

( )

14. Which statement(s) is/are correct about sexual reproduction between males and

females?

A. The fertilization process always takes place in the female reproductive system.

B. The male reproductive cells are called sperms.

C. The umbilical cord provides the foetus with the nutrients it needs to survive.

D. The gestation period is about 7 months.

(1) C only. (2) D only.

(3) B and C only. (4) A and D only. ( )

15. The picture below shows the location of some plants along the river side. The arrows

indicate the direction of the water flow in the river.

After several years, dispersal takes place and more plants of the same kinds are seen

growing on other areas as seen in the picture below.

Which of the following sets of plants are likely to be X, Y and Z?

X Y Z

(1) Mangrove Balsam Lotus

(2) Shorea Saga Mimosa

(3) Lalang Angsana Love grass

(4) Pong pong Mango Coconut ( )


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16. Below is a life cycle of a plant.

Which processes occur at X?

A. Dispersal

B. Germination

C. Pollination

D. Fertilization


(3) B and C only (4) C and D only

( )

17. Study the chart below

Which of the following best represents A, B and C?

A B C

(1) Roots Stem Leaves

(2) Leaves Roots Stem

(3) Roots Leaves Stem

(4) Stem Roots Leaves( )

Seedling Adult plant

FlowersFruitsX

Parts of a ginger plant

Can it be used for reproduction?

Does it contain chlorophyll?

CBA

Is it underground?

No Yes

Yes No Yes


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18. Three different species of plants were selected for a study. Their methods of

dispersal were determined by the number of seedlings found at different radii from

the parent plant.

Based on the data collected, which of the following shows the correct dispersion

methods for the different species?

A B C

(1) Animal Splitting Wind

(2) Animal Wind Splitting

(3) Wind Animal Water

(4) Wind Animal Splitting

( )

Radius (km)

No.ofseeds

Species A

Radius (km)

No.ofseeds

Species B

Radius (km)

No.ofseeds

S ecies C


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19. Below is a fruit of dandelion.

How does the dandelion fruit disperse?

(1) By wind (2) By splitting

(3) By animal (4) By water

( )

20. Below is a developing plant.

Which of the following best identifies the

substances that are transported from the roots to

the leaves and from the leaves to the developing

fruit?

Roots to leaves Leaves to developing fruit

(1) Dissolved mineral water Starch

(2) Food Dissolved mineral salts

(3) Water Glucose

(4) Water Oxygen

( )

21. Below is a flower with different labeled parts.

Which parts of the flower form the female

reproductive organs of the flower?

(1) A and C only. (2) B and F only.

(3) A, C and E only. (4) A, C, D and E only.

( )


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22. Study the diagram below carefully.

Which of the following processes correspond to X, Y and Z?

X Y Z

(1) Respiration Photosynthesis Decomposition

(2) Decomposition Photosynthesis Respiration

(3) Photosynthesis Respiration Decomposition

(4) Photosynthesis Decomposition Respiration

( )

23. Below is a cross section of a flower.

If part D is removed, seeds can still be produced by the flower. However, if we

remove part B, no seed will be produced. Why is it so?

(1) Because part D has no function

at all.

(2) Because part B is connected to part

C.

(3) Because fertilization depends on

part B.

(4) Because pollination occurs at part

B.

( )

A

B

D

C

provides light energy

for Bto carry out Xprovides oxygen for

Cto carry outY

Zproduces nutrients,

water and carbon dioxide

that are useful to B

produces waste

which is broken

when it dies, it is

broken down by D


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24. The picture below shows the underside of a leaf during the day when the plant is

photosynthesizing.

During photosynthesis, substance Z is produced and transported to P.

Which of the following statement(s) is/are true?

A. P could be root.

B. Z is glucose.

C. Gas X is also produced during nighttime.

D. Gas Y is needed by the leaf during nighttime.


(3) B and C only (4) A, B, C and D

( )

25. With regards to the decomposition process, which statement is true?

(1) During decomposition, oxygen is

produced.

(2) Water is produced during

decomposition.(3) Food is broken down into

smaller substances during

decomposition.

(4) Decomposition can take place with

bacteria, caterpillars and fungi.

( )

26. Which statement is true about pollen grains?

(1) The pollen grains are produced

by the stigma.

(2) A pollen grain will fuse with the

seed during fertilization.

(3) Only the pollen grain passes theinherent trails to the offspring.

(4) When a pollen grain lands on thestigma, pollination will occur.

( )


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27. Which of the following cycle best describes the life-cycles of a birds nest fern?

(1)

(2)

(3)

(4)

( )

28. The table below states different parts of plants and their functions respectively.

Which combination is not correct?

Plant part Function

(1) Leaf Gives off excess water

(2) Flower Germinates and grows into seedling

(3) Root Holds the plants firmly to the ground

(4) Stem Transport water and nutrients to other

parts of the plant.

( )

Adult fern

SporeYoung fern

Adult fern

SeedYoung fern

Adult Fern

FruitYoung Fern

Spore

Adult Fern

SeedYoung Fern

Spore


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29. Observe a birds nest fern and a mushroom as below.

How is the birds nest fern different from a mushroom?

Birds nest fern Mushroom

(1) It has flowers It has no flowers.

(2) It feeds on dead animals It feeds on dead plants.

(3) It reproduces from seeds It reproduces by spores.

(4) It needs sunlight to grow It does not need sunlight to grow

( )

30. The diagram below shows a plant cell under a microscope.

Where in the cell does photosynthesis take place?(1) A (2) B

(3) C (4) D

( )


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Mock Paper D (Cycles) Paper 2


31. Amy poured some water into a transparent bottle and sealed the mouth of the bottle.

Then she marked the water level on the surface of the bottle with a permanent

marker before putting the bottle into the freezer and left it there for an hour.

What change would Amy observe in the water level in the bottle after taking it out?

Why? [2]

32. Below is the water cycle.

a) Describe what happens during the processes represented by arrows A, B, and C. [2]

b) What is the importance of the water cycle for all the living things on Earth? [1]

Rain

Water bodies such

as the sea, rivers

and lakes

Water vaporClouds

CA

B


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33. Tom took some ice cubes out of the refrigerator and heated them up. He recorded the

temperature of the ice cubes for ten minutes before it boiled. Then he removed the

heat source and continued recording the temperature of the water until it reached the

room temperature.

Tom noted that the temperature of the ice cubes remained constant when it reached

0C before rising again, and later when it reached 100C before dropping to 25C.

Why is that so? [2]

.

34. In the below experiment, an equal number of fish were put into two different tanks.

The fish were fed with sufficient food during the experiment.

The result was recorded in the following table.

Observation in tank A Observation in tank B

Day 1 Fish swimming actively Fish staying inactive

Day 2 Fish swimming actively ?

a) What will happen to the fish in tank B on day 2? [1]

b) Justify your answer with reason. [2]


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35. The diagram below shows the male and female reproductive systems.

Shade the part that contains the immature female reproductive cells. [1]

Mark an X at the place where the sperms are produced. [1]

36. Study the two flowers below.

Which flower is most likely to be pollinated by animals? Give at least 2 reasons for

your answer. [3]


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37. Alice took a large piece of ice from the freezer and weighed it. The weight was 250g.

She placed the ice in a container and heated the container over the stove for 15

minutes. She then weighed the water, by subtracting the weight of the container with

water in it minus that of the empty container, which she was told was 500g.

She found that the water weighed 150g. Alice concluded that her Science teacher had

not been too accurate in her teachings. When ice melts, both its volume and mass

change.

a) Is Alice correct? Explain your answer.[2]

b) Alice placed the container with the water back into the freezer, so that it will turn

back to ice. What is the weight of the ice?[1]

38. Below are some of the stages of a flower in its life cycle, which are not arranged in

the correct order.

a) Rearrange the pictures in the correct order. [1]

b) If the flower is not colorful, how can it attract pollinators to itself?[1]


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39. Liquid X turns from violet to colorless in the presence of carbon dioxide.

Jane wanted to confirm that carbon dioxide is required by hydrilla during

photosynthesis. She put some liquid X into flask A, then she exhaled into the liquid

until it was colorless.

The set-up left in a dark box, as shown below.

a) Janes teacher told her that her experiment would not achieve its objective. Why is it

so? [1]

b) Janes teacher also told her to set up another set-up that was identical to the first

except that Jane must not exhale into it. What was the purpose of setting up the

second set-up? [2]


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40. The graph below shows the relationship between the amount of water loss and the

surface area of leaves.

a) From the information in the graph, explain how cacti are able to survive in the desert.

[1]

b) Will this plant be able to survive in the same habitat as a cactus? Justify your answer

with reason. [2]

Amount

of water

loss (cm3)

Surface area of

leaves (cm2)


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41. Study the two graphs below. Graph A shows the relationship between the amount of

water loss and the weight of water loss of leaves. Graph B shows the relationship

between the amount of water loss and the surface area of leaves.

From the information in Graphs A and B, explain how the surface area of leaves

affects the weight of water loss in plants. [2]

42. An experiment of 2 set-ups was carried out to determine the effect of muddy water

on the rate of photosynthesis in aquatic plants. Beaker A contained clean water,

Beaker B contained muddy water. Similar plants were placed in each beaker and left

in the same place with strong sunlight.

The amount of oxygen collected in each beaker was recorded at regular intervals.

The amount of oxygen collected in Beaker B was plotted in the graph below.On the same graph, draw a line for Beaker A. [2]

Amount

of waterloss (cm

3)

Weight of water loss

of leaves (g)

Graph A

Amount

of waterloss (cm

3)

Surface area of

leaves (cm2)

Graph B


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43. Sarah conducted an experiment to find out the volume of water taken by a plant. A

young plant was placed in Cylinder A, and another identical plant was placed in

Cylinder B. Cylinder C was also set up as a control.

The experiment was carried out in two days.

The volume of water in each cylinder was recorded at the beginning and at the end of

the experiment as in the table below.

Volume of water

Beginning End

A 2000 1350

B 2000 1250

C 2000 1500

a) Explain the difference in the amount of water left in measuring Cylinders A and B at

the end of the experiment. [1]

b) Why was Cylinder C set up as a control? [1]

c) Suggest one way for Sarah to improve the experiment so that she would not need touse Cylinder C as a control. [1]


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44. The diagram below shows the cross section of a flower.

Which of the parts of the flower perform similar functions to those of human? [2]

Similarities

Reproductive organs in human Reproductive parts in a flower

Testes a.

Ovary b.

45. On a beach, people can observe different plants growing in a particular pattern as

shown below.

What is the dispersion method for each of the plants?[2]


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46. Below are fruits of two different plants.

a) What is the dispersion method of A and B respectively?[1]

b) Justify your answer with a reason.[2]


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Mock Paper E (Cycles) Paper 1





1. The table below shows groups of fruits/seeds with different methods of dispersal.

Group A Group B Group C

Shorea Flame of the Forest Mangrove

Sycamore Balsam Lotus

Can you tell which of the following set of fruits/seeds does not match the

classification table below?

Group A Group B Group C(1) Lalang Rubber Coconut

(2) Cupids Shaving

Brush

Mimosa fruit Sea Almond

(3) Dandelion Saga Water-lily

(4) Angsana Rain Tree Pong Pong

( )

2. Two pupils, Aaron and Kate, were asked to classify 4 different fruits. The tables

below show how Aaron and Kate classified some fruits into 2 categories:

Aarons classification:

Group X Group Y

Chilli Coconut

Love grass Sea almond

Kates classification:

Group X Group Y

Love grass Chilli

Sea almond Coconut

How did the two pupils group the fruits?

Aarons classification Kates classification(1) Whether they have any poisonous

parts

Whether they are edible

(2) The way the seeds are dispersed Whether they produce flowers

(3) Whether they have any poisonous

parts

Whether the produce flowers

(4) The way the seeds are dispersed Whether they are edible

( )


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3. A pupil studied some flowers and listed their distinctive features.

Flower Distinctive features

A Pink, has sticky pollen grains

B Has blue markings, produces sweet nectar

C Purplish colour, smells like rotting flesh

D Large feathery stigmas hang out of the flowerE Green, grows in clusters, has no petals

Which of the above flowers are likely to be wind-pollinated?

(1) A and C only (2) B, C and D only

(3) D and E only (4) A, D and E only

( )

4. Carefully examine the movement of pollen grains in the following diagram.

In order for a flower to be fertilized, which of the arrows are in the correct direction?



( )


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5. Which diagram correctly describes the life-cycle of a flowering plant?

(1)

(2)

(3)

(4)

( )


102/15298

6. In order to grow some new crops, Mr. Tan ploughed his field and tried to kill all the

wild weeds and plants growing in it. He did not do a good job as some kinds of

plants were left behind at the edge of the field (as shown in the diagram).

However, an unexpected event happened and he had to leave the soil alone for one

year. When he came back, the field was full of these 3 plants.

Which of the following diagrams is the most likelyrepresentation of how the three

different types of plants had grown on his field?

(1) (2)

(3) (4)

( )

7. Which of the following shows the correct sequence of reproduction of a flowering

plant?

(1) (2)

(3) (4)

( )

Plant X: Seeds are scattered by wind.

Plant Y: Seeds are scattered by explosive mechanism.

Plant Z: Fleshy fruits and seeds are scattered by animals.

Plant X

Plant Y

Plant Zwind direction


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8. Study the pictures below carefully.

Based on your observations, what are the similarities between these two plants?

A. Both are stems.

B. Both are used to reproduce new plants.

C. Both develop underground.

(1) A only (2) B and C only(3) A and B only (4) A, B and C

( )

9. Which of the following statements are true?

A. All flowers have male and female parts.

B. Only flowering plants reproduce from seeds.

C. The ovary is present in the female part of the flower.

D. Pollen grains are produced by the male part of the flower.

(1) A and B only (2) C and D only(3) B, C and D only (4) A, B, C and D

( )

10. John wanted to find out whether light played a role in seed germination. While

keeping other conditions unchanged and favorable for germination, he placed

container A in a cupboard and container B near the window of a room. What is

expected to be seen after 1 week?

(1) Only the seeds in container A

will germinate.

(2) Only the seeds in container B will

germinate.(3) The seeds in both containers will

germinate.

(4) The seeds in both containers will

not germinate.

( )


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11. Three pupils studied the reproduction methods of two organisms, A and B, as show

below

Organism A Organism B

They recorded their observations in their Science workbooks. Which of these three

pupils made the correct statement(s)?

A.

Both the offsprings of organisms A and B have better resistance againstbacteria than their parents.

B. The offsprings of organism B is not likely to produce better fruits than its

parents.

C. Both the offsprings of organisms A and B are genetically identical to their

parents.

(1) A only (2) B only


( )

12. The two flowers below belong to different species. By accident, some pollen grains

from flower A fell onto the stigma of flower B as shown.

What will happen after a week?

(1) A pollen tube will grow down

the style of flower B.

(2) No changes to the petals of B.

(3) The petals of flower B will

wither.

(4) The ovary of flower B will be

swollen.

( )


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13. The picture below shows part of a potato plant.

Which of the following are the functions of part X?

A. To take in water for the plant

B. To help the plant to reproduce

C. To take in nutrients from the soil

D. To store excess food made by the plant

(1) A and C only (2) A and D only

(3) B and C only (4) B and D only

( )

14. Below is a cross section of a flower.

This flower is pollinated by insects. What part of the flower acts as attractor to

insects?

(1) A (2) B(3) C (4) D

( )

15. Some vegetables and weeds are growing together in a garden. It is obvious that the

vegetables have to compete with the weeds for many essential factors. However,

there is one thing that they need not compete with the weeds for. What is it?

(1) Water (2) Nutrients

(3) Space (4) Oxygen

( )


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16. Three plants, P, Q and R are found along a river bank as shown.

The fruits of the plants, R, Q and R, are shown below.

How will the young plants be located in relation to their parents a year later?

(1) (2)

(3) (4)

( )


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17. Below is a picture of a potato plant.

Which functions does the stem perform?

A. Storage of food for the plant.

B. Assistance for the reproduction

process.

C. Holding of the plant into the ground.

D. Support of the branches and leaves

of the plants.


(3) A, B, and D only (4) A, B, C and D.

( )

18. Which of the following statements about human reproduction isfalse?

(1) Fertilisation occurs inside the

female body.

(2) The fertilised egg further divides

to produce more cells.

(3) Many sperms are needed to

fertilise one egg.

(4) The young develops inside the

womb after fertilisation.

( )

19. The family tree below shows

members of Johns family who

have Disease X and those whodo not. People who carry the

genetic materials that cause

Disease X will grow an extra

finger or toe.

Which of the following conclusion can be drawn from the above family tree?

A) Johns mother inherited the genes of Disease X from her maternal grandfather.B) The genes of Disease X are passed on only to the female members of the family.

C) There is a possibility of Johns sister bearing a son with Disease X.

D) The son of a female Disease X carrier will also be a carrier of Disease X.

(1) A and C only (2) C and D only

(3) A and D only (4) A, B and C only

( )


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20. Why do plants scatter their seeds? Choose the most appropriate reason(s):

A. To obtain more oxygen.

B. To reduce overcrowding.

C. To obtain sufficient sunlight and nutrients.

D. To produce flowers of better quality.

E. To protect the fruits from hungry animals.


(3) A, B and C only (4) A, C, D and E only

( )

21. The table below shows the fur colours that the offsprings of cats inherited from their

parents with various fur colors.

Fur color

Parents Female white

Male white

Female white

Male black

Female

yellowMale black

Female

blackMale black

Offsprings Female black

or yellow

Male all white

Female black

or yellow

Male all

white

Female black

or yellow

Male all

yellow

Female all

black

Male all

black

Based on the information above, which one of the following statements

outreach p5 science

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