Y

XW

Answer all the questions.

1

(a) Based on Diagram 1, name the parts labeled W and X.

(i) W : _______________________________________________________________________________________

(ii) X :______________________________________________________________________________________[ 2 marks]

(b) State the function of:

(i) W : ______________________________________________________________________________________

(ii) X :______________________________________________________________________________________[ 2 marks]

(c) Name the two parts of human body in which Y is found abundantly.

_______________________________________________________________________________________________

_______________________________________________________________________________________________

[2 marks]2. Ahmad has conducted a study in an ecosystem. He presented his findings as a bar chart below in Diagram 2.

Diagram 2a) The snake is an organism that is found in the bar chart. Why the number of snake is less than the number of rat in the ecosystem?

_______________________________________________________________________________________________

_______________________________________________________________________________________________

[2 marks]

1

Diagram 1

b) By using the bar chart in the Diagram 2 above construct one food chain.

[1 mark]c)

Based on Diagram 3, name the relationship between the eagle and the rat in the picture above. How does this relationship beneficial in agriculture?

_______________________________________________________________________________________________

_______________________________________________________________________________________________ [3 marks]

3. Based on the ear diagram below, answer the question given.

Diagram 4

(a) Complete the path of hearing mechanism from the air to the brain

[ 3 marks]

(b) What is the risk of working with machines that produce a very loud noise? Explain your answer. _______________________________________________________________________________________________

_______________________________________________________________________________________________

_______________________________________________________________________________________________

[ 2 marks] (c) Explain why it is bad habit to use sharp objects to dig into our ears.

2

Diagram 3“An eagle swooped into the grass and caught a rat”

Soundi)

Ear canalii)

Brain Nerveiii)

Ossicle

X

Y

_______________________________________________________________________________________________

[ 1 mark]4 The diagram below shows the structure of the human eye.

(a) (i) On the diagram 5 above, tick ( / ) two parts involved in focusing light to form an image. [ 2 marks] (ii) At which labeled part does the image fall?

_______________________________________________________________________________________________

[ 1 mark](iii) Name and state the function of the part labeled G.

_______________________________________________________________________________________________

_______________________________________________________________________________________________

[ 2 marks](b) Underline the correct answer in the bracket to complete the statement. Light that enters the eye is focused to form an image through ( reflaction / refraction ). [ 1 mark]

5. Diagram below shows the path of light entering the human eye.

Diagram 6

a) Based on the diagram 6 above, between X and Y, which alphabet cannot be seen by the eye? Explain your answer.

3

Diagram 5

______________________________________________________________________________________________

_______________________________________________________________________________________________

[ 2 marks]

b) Explain the reason why the other alphabet can be seen by the eye.

______________________________________________________________________________________________

_______________________________________________________________________________________________

[ 2 marks]c) Suggest two ways to overcome the limit in sight.

______________________________________________________________________________________________

_______________________________________________________________________________________________

[2 marks]6 (a) The diagram shows a type of interaction

Diagram 7(i)Name the type of interaction shown in Diagram 7.

_______________________________________________________________________________________________[1 mark]

(ii) State another example with the same type of interaction as above.

______________________________________________________________________________________________[1 mark]

(b) Biological control is a common method used in agriculture to control the number of pest attacking crops. (i) State two types of interaction used in biological control.

______________________________________________________________________________________________

_______________________________________________________________________________________________

[2 marks]

(ii) State one advantage and one disadvantage of biological control. a) Advantage:

4

______________________________________________________________________________________________

b) Disadvantage: ______________________________________________________________________________________________

[2 marks]

7 Diagram 8 shows an experiment done to investigate a vase that is located in the cupboard to show the geotropism shown by the shoot.

Diagram 8a) State the : (i) manipulated variables: ________________________________________________________________________

(ii) responding variables : ________________________________________________________________________[ 2 marks]

b) After a few days, state the observation that can be seen on the

(i) Plant P:____________________________________________________________________________________

(ii) Plant Q:___________________________________________________________________________________[ 2 marks]

c) What is the conclusion that can be made from the shoots geotropisme?

_____________________________________________________________________________________________

______________________________________________________________________________________________

_______________________________________________________________________________________________[2 marks]

8 (a) (i) Diagram 9 below shows parts of the human body.

5

Cupboard

On the above diagram:Tick ( / ) in the correct alphabet to show the internal organs that are involved in the digestion of food. [ 3 marks]

(ii) Tick ( / ) the correct functions of the part labeled B.Produces bile

Produces gastric juice

Breakdown protein into amino acid

Breakdown starch into maltose

[ 2 marks]b) Organs P and Q are found in the human body

Tick (/) one difference between the substance that are absorbed by organ P and organ Q.

[ 1 mark ]

9 The diagram 10 below shows the balsam plant in the school’s Science Park.

Diagram 10

(a) Based on Diagram 10, explain what happens when plant receive sunlight.

6

Diagram 9

Diagram 9(a)

Organ P absorbed glucose while organ Q absorb fatty acid

Organ P absorb amino acid while organ Q absorbed water

_______________________________________________________________________________________________

_______________________________________________________________________________________________

[2 marks](b) State the function of the green leaves of the plant that contain chlorophyll.

_______________________________________________________________________________________________

[1 mark](c) Photosynthesis is the process of returning gas X to the atmosphere. What is gas X?

_______________________________________________________________________________________________

[1 mark](d) State two natural process that use up gas X in the air.

_______________________________________________________________________________________________

______________________________________________________________________________________________[ 2 marks]

10 Read the passage below.

(a)Besides obesity, what is the other health problem faced by Malaysian? _______________________________________________________________________________________________

[ 1 mark](b) List three health problems due to obesity.

_______________________________________________________________________________________________

_______________________________________________________________________________________________

_______________________________________________________________________________________________[3 marks]

7

(c) Suggest two ways to prevent obesity.

_______________________________________________________________________________________________

_______________________________________________________________________________________________

_______________________________________________________________________________________________

[2 marks]

11 The diagram 11 below shows an ecosystem.

Diagram 11

(a) Based on the Diagram 11 shown above, list all the organisms that are producers.

_______________________________________________________________________________________________

_______________________________________________________________________________________________

[2 marks](b) Which organism can be classified in the same group as butterfly? Explain with an appropriate reason.

_______________________________________________________________________________________________

_______________________________________________________________________________________________

[2 marks]

8

Diagram 13

B

A

Light

Carbon dioxide

Photosynthesis

CStarch

(c)Herbicide is sprayed on the weeds .

Diagram 12

Discuss the negative effects of spraying herbicide and suggest ways to overcome the problem of weeds.

_____________________________________________________________________________________________

______________________________________________________________________________________________

_____________________________________________________________________________________________

______________________________________________________________________________________________

_____________________________________________________________________________________________

______________________________________________________________________________________________

[6 marks]12 (a) The Diagram 13 below shows the requirement and product of photosynthesis.

9

Identify A, B and C.

(i) A : _____________________________________________________________________________________

(ii) B : ______________________________________________________________________________________

(iii) C :______________________________________________________________________________________

[3 marks] (b) A student uses the following set up to investigate photosynthesis as shown in Diagram 14 below. She added baking soda to the water in one of the set-up to increase the concentration of carbon dioxide in the water before placed both set-ups under the sunlight.

Diagram 14

The number of gas bubbles produced in both set-ups is recorded as the following.Time (min) Number of gas bubbles produced

Set-up X Set-up Y0 0 05 5 310 12 915 18 1320 26 17

Table 1 (i) Based on Table 1, between set-up X or Y , which set-up that represents the result when added the baking soda. Explain your answer.

_______________________________________________________________________________________________

_______________________________________________________________________________________________

[2 marks] (ii) Besides the amount of Elodea, state another variable which can be manipulated to have similar results as shown in the table above. _____________________________________________________________________________________________

[1 mark]

10

(c) The Diagram 15 below shows a human activity that threatens our ecosystem.

Diagram 15

Discuss the effects of this activity and how can we overcome them.

___________________________________________________________________________________________

___________________________________________________________________________________________

___________________________________________________________________________________________

___________________________________________________________________________________________

__________________________________________________________________________________________

___________________________________________________________________________________________

___________________________________________________________________________________________

[4 marks]13 (a) Diagram 16 shown below shows two types of interaction between organisms.

11

Diagram 16

Grass

(i)

Grasshopper

Snail

(ii)

(iii)

(iv)

Based on the diagram, describe the two interactions.

P :____________________________________________________________________________________________

______________________________________________________________________________________________

[2 marks]

Q : ____________________________________________________________________________________________

______________________________________________________________________________________________

[2 marks](b) Competition is a type of interaction to obtain the limited basic needs. State two basic needs that plants compete for.

______________________________________________________________________________________________

[2 marks]

(c) The following shows seven organisms. Complete the following food web.

[ 4 marks]

Diagram 17

12

Grass, snail, Rabbit, Frog, Snake, Grasshopper, Bird

14 A consumer magazine has released an article as the following.

Justify the call to restrict the use of sugar in foods and drinks to fight obesity based on the research above.

_______________________________________________________________________________________________

_______________________________________________________________________________________________

_______________________________________________________________________________________________

_______________________________________________________________________________________________

_______________________________________________________________________________________________[5 marks]

(b) Puan Aminah has a diabetic family history. The bar chart in Diagram 19 below shows her food intake.

Amount

13

In a related research published in the British Medical Journal in 2012, researchers found out that,

Diagram 18

(i) Based on her food intake, comment on Puan Aminah’s risk of getting diabetes. Give your reasons.

_______________________________________________________________________________________________

_______________________________________________________________________________________________

[2 marks]

(ii) Plan a breakfast menu suitable for Puan Aminah to reduce the risk of her having diabetes.

_______________________________________________________________________________________________

_______________________________________________________________________________________________

_______________________________________________________________________________________________

[3 marks]

END OF QUESTION PAPER

14

Diagram 19