grade 9 biology paper 2 term 1 2013 copy
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First term test2013 grade 9 paper 2 GA Atoll school.
GA ATOL SCHOOL , KOLAMAAFUSHI REPUBLIC OF MALDIVES
FIRST TERM EXAMINATIONS- 2013
BIOLOGY Grade 9 5090/22 Paper 2 Theory 26TH MAY 2013
1 hour 30 minutes Candidates answer on the Question paper.
Additional Materials: Answer booklet/paper
READ THESE INSTRUCTIONS FIRST
Write your centre number,candidate number and name in the spaces at the top of this page and
on any separate answer paper used. Write in dark blue or black pen. You may use a soft pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, highlighters, glue or correction fluid. DO NOT WRITE ON ANY BARCODES.
Section A Answer all questions.
Write your answers in the spaces provided on the Question paper.
Section B Answer ALL the questions. Write your answers to Section B on the space provided on the question paper. At the end of the examination, fasten any separate answer paper used securely to the question paper. 2.enter the numbers of the section B questions you have answered in the grid below.
INFORMATION FOR CANDIDATES The intended number of marks is given in brackets [ ] at the
end of each question or part question.
You are advised to spend no longer than one hour on section A
For Examiner’s Use
Section A
Section B
Total
CANDIDATE
NAME
CANDIDATE
NUMBER
This document consists of 12 printed pages
FIRST TERM EXAMINATIONS- 2013
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First term test2013 grade 9 paper 2 GA Atoll school.
Section A Answer all the question in this section.
Write your answers in the spaces provided.
1.Fig.1.1 shows the average sweating rates of a person over a 4-hour period under different conditions.
Fig 1.1
(a) State two ways other than by sweating in which a person might lose water.
1. .....................................................................................................................................
2. .................................................................................................................................[2]
(b) State and explain how the rates of sweating shown in Fig. 1.1 are different for the person
when they are
(i)walkingandsitting,............................................................................................................
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(ii) clothed and unclothed,
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(iii) in the sun and in the shade.
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[6]
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First term test2013 grade 9 paper 2 GA Atoll school.
(c) Suggest an explanation for the effect that carrying 15 kg has on the person’s rate of sweating.
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[Total: 10].
2. Fig. 2.1 shows a pair of kidneys and some associated structure.
Fig 2.1
a) i) identify A in figure 2.1
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(ii) Peristalsis occurs continually in structure A. Describe and explain how this helps
the structure to carry out its function.
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(b) Identify structure B on Fig. 4.1 and state how the structural features of C and D enabled you
to make your identification.
structure B .................................................
structural features of C and D .......................................................................................................
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First term test2013 grade 9 paper 2 GA Atoll school.
(c) On a hot day, a person consumed only meat before a day of energetic work. Explain
thelikely changes in the composition of the person’s urine during the day.
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[Total: 10]
3.Fig. 3.1 shows the liver receiving chemicals from and sending chemicals to some other
organs.
fig 3.1
(a) Identify organs G and I.
G .............................................
I ............................................... [2]
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First term test2013 grade 9 paper 2 GA Atoll school.
(b) Name the carbohydrate travelling in the hepatic portal vein (E), and explain how, on
arrival in the liver, it is converted into a storage compound.
named carbohydrate ........................................................................................................
explanation .............................................................................................................................................
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(c) Describe how the composition of the contents of F and H differ in a healthy person.
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[Total: 10]
4. Fig. 4.1 shows a vertical section through a human heart. The valves have not been shown.
Fig 4.1
(a) Identify structures A and B in Fig. 4.1.
A ..............................................
B .............................................. [2]
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First term test2013 grade 9 paper 2 GA Atoll school.
(b) Complete Fig. 4.1 by drawing the valves to show how they control the direction of blood flow
through the heart. [4]
(c)On Fig. 4.1, draw arrows to show the direction of blood flow into, through and out of the heart.
[2]
Some people have a condition known as ‘a hole in the heart’. This allows a connection between
the left and right atrium at point X in Fig. 4.1.
(d) Suggest two problems this might cause.
1. ..............................................................................................................................................
2. ..........................................................................................................................................[2]
[Total:10]
5. Fig. 5.1 shows a computerised image taken through the thorax (chest) of a person lying on
their back.
Fig 5.1
(a) Draw a line on Fig. 5.1 to show the position of the chest wall if the person breathes in deeply.
[1]
(b) Identify the structures F, G, H in Fig. 5.1.
F ..............................................
G ..............................................
H .............................................. [3]
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First term test2013 grade 9 paper 2 GA Atoll school.
(c) Explain the part played by structures H when the person breathes in.
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[ Total: 10]
Section B Answer ALL the questions.
Write your answers in the space provided on the question paper.
Question 8 is in the form of an Either/Or question. Answer only question 8 Either or
Question 8 Or.
6. Fig.6.1 shows the human alimentary canal.
Fig 6.1
(a) Name parts G, H and I.
G .........................................
H ..........................................
I ........................................... [3]
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First term test2013 grade 9 paper 2 GA Atoll school.
(b) In which lettered part does most of the absorption of substances in solution occur?
................................ [1]
Fig. 6.2 shows the concentration of a drug (drug J) in a person’s blood during the time after it
was swallowed.
Fig 6.2
Drug J is taken with a meal.
(c) (i) How long after swallowing the drug does it reach the highest concentration in the
person’s blood?
....................... [1]
(ii) Suggest in which part of the alimentary canal this drug is absorbed most rapidly
into the blood.
......................... [1]
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First term test2013 grade 9 paper 2 GA Atoll school.
Fig. 6.3 shows a pill designed to release its drug (drug K) in the alimentary canal over a
longer period of time.
Fig 6.3
(d) Using the information in Fig. 6.3, explain why it takes longer for drug K than it does for drug
J to reach its highest blood concentration.
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(e) Suggest why the pill shown in Fig. 5.3 may take more time to pass through the
alimentary canal than the food with which it is swallowed;
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[TOTAL10]
7.(a) State the effect on a plant of the lack of
(i) nitrates,
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(ii) magnesium.
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First term test2013 grade 9 paper 2 GA Atoll school.
(b) Explain the significance of leaf structure in the process of photosynthesis.
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[Total :10]
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First term test2013 grade 9 paper 2 GA Atoll school.
8 Either
A person cuts their hand on a piece of glass that they are picking up from the ground.
a) Describe how the bodys defence mechanism protect the person from infection.
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b)Explain how the person would know if the cut had damaged an artery.
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[Total:10]
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First term test2013 grade 9 paper 2 GA Atoll school.
8 Or Describe the double circulation of blood by reffering the chambers of heart.
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b)write down the difference between plasma and tissue fluid.
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[Total:10]