NAME: _______________________________________ CLASS: 2 _____

BLANTYRE SECONDARY SCHOOL CLUSTER

2022 JUNIOR CERTIFICATE OF EDUCATION MOCK EXAMINATION

BIOLOGY
(100 Marks) Subject Number:J022
Monday, 23 May Time Allowed: 2hrs
Instructions 8:00 – 10:00am
1. This paper contains 10 pages, please check.
Question Tick if Do not write in
2. This paper has 3 sections A, B, and C Number answered these columns
3. For Section A, encircle the letter representing
1-20
the right answer. Sections B and C should
be answered in the spaces provided. 21

4. In the table provided on this page, tick against 22

the question number you have answered. 23

5. Hand in your completed question paper when
24
time is called to stop writing.
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Total

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 NAME: _______________________________________ CLASS: 2 _____

© 2022BSS CLUSTER Turn over

Section A. Multiple choice (20 marks)

B. Changes in the environment that leads

1. Name the apparatus used in the laboratory to changes in activity in organism
to measure a small quantity of a liquid. C. Changes in external environment
A. Boiling tube D. Changes in the internal environment in
B. Conical flash an organism
C. Beaker 7. Which one is not a role of iris in an eye?
D. Test-tube A. To absorb dangerous light rays that may
2. In a food test, what does the word reducing enter the eye
sugars refer to? B. To regulate amount of light entering the
A. Sugar that reduces other chemicals eye
B. Simple sugar C. To regulate the size of the pupil for
C. Glucose vision in dim and in bright lights
D. Sugar that can convert copper (ii) ions 8. Which one is short –sightedness?
to copper (i) ions when heated with A. Ability to see near
benedict’s solution. B. Ability to see far
3. Which of the following statements define C. Ability to see near objects clearly but
photosynthesis? not able to see far objects clearly.
A. Process by which living organisms D. Ability to see far objects clearly but not
make their own food able to see near object clearly
B. Process by which plants use light 9. Which part of the digestive system produces
energy, carbon dioxide and water to enzyme trypsin
make complex food substances A. Pancreas
C. Process by which plant leaves make B. Walls of ileum
glucose C. Walls of stomach
D. Process whereby plants make starch by D. Duodenum
use of water and carbon dioxide Study the diagram below and use it to
4. Which one is not a part of the breathing answer the questions that follow.
system in humans?
A. Trachea
B. Bronchus
C. Pleural membrane
D. Pericardium
5. Identify the factor that is not considered in a
person who wants to donate blood to
Malawi blood transfusion services
A. The age
B. The tribe of the person
C. The health history of the person 10. Name the liquid that fills up the part labeled
D. Drugs that the person is currently A.
taking. A. Oxygen
6. Define the term stimulus. B. Plasma
A. Change in activity due to changes in C. Pleural fluid
weather
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NAME: _______________________________________ CLASS: 2 _____

D. Blood B. S
11. Name the structure labeled B. C. Q
A. Left lung D. T
B. Stomach 16. What is the basic unit of a protein?
C. Heart A. Glucose
D. Pancreas B. Fructose
12. The main function of the part labeled C is to C. Amino acid
A. Protect the lungs D. Fatty acid
B. Contract and relax to bring about 17. Which gas is given out during the process
gaseous exchange of photosynthesis?
C. Filter the foreign particles that enter the A. Nitrogen
system B. Carbon dioxide
D. Manufacture hemoglobin C. Oxygen
13. The type of joint present between the bones D. Hydrogen
of human skull are known as 18. What is agriculture;
A. Ball-and socket joint A. A solution used to kill bacteria
B. Rotatory joint B. A substance with substances that
C. Hinge joint encourage microorganisms to grow and
D. Sutures observed
C. A chemical to trap and kill bacteria
Table below be shows four types of plants and D. An algae that feeds on bacteria
number of stomates found on their upper leaf 19. The figure below illustrates two types of
surface and on their lower leaf surface. Use fractures.
the information to answer the question that
follows:
leaf Stomates on upper Stomates on lower
epidermis epidermis
Q 100 0
R 100 110
S 2 70
T 0 20 What name is given to fracture labeled K?
A. Compound fracture
14. Among the four plants which plant lives in B. Leg fracture
extremely dry habitats? C. Lower leg fracture
A. Q D. Simple fracture
B. R 20. Saliva is secreted by:
C. S A. Epiglottis glands
D. T B. Glottis glands
15. What plant is found floating on water C. Salivary glands
surface? D. Gall bladder
A. R

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NAME: _______________________________________ CLASS: 2 _____

SECTION B (50 Marks)

Answer all questions using the space provided.

21. The figure below shows the internal structure of teeth. Use it to answer the questions that
follow:

a. Name the parts marked X Y and Z

X ______________________________________________________________________
Y ______________________________________________________________________
Z _____________________________________________________________ (3 marks)
b. Give two adaptations of the part labeled Z.
_________________________________________________________________________
______________________________________________________________ (2 marks)
22. Briefly explain each of the following ways of caring for people with HIV/AIDS.
(a) Counseling and knowledge support
_________________________________________________________________________
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__________________________________________________________ (2 marks)
(b) Emotional and spiritual care
_________________________________________________________________________
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___________________________________________________________ (2 marks)
23. The figure below shows lifecycle of a given worm.

a. Name the worm.

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NAME: _______________________________________ CLASS: 2 _____

_________________________________________________________________ (1 mark)
b. The worm infects two hosts marked L and M. what type of host is L and M
____________________________________________________________________________
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___________________________________________________________________ (2 marks)
c. State three methods that can be used to control the above worm.
____________________________________________________________________________
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___________________________________________________________________ (3 marks)
24. a. Explain why it is advisable to breath air through the nasal passages than through the
mouth.
_________________________________________________________________________
_________________________________________________________________ (1 mark)
b. What is the function of rings of cartilage that line the trachea?
_________________________________________________________________________
________________________________________________________________ (1 mark)
c.Give two adaptations of alveolus for gaseous exchanges.
_________________________________________________________________________
________________________________________________________________ (2 marks)
25. Briefly explain the procedures carried out on artificial resuscitation (respiration)
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__________________________________________________________________ (5 marks)

26. The figure below illustrates a human digestive system.

a. Name parts D and C.

______________________________________________________________________
_____________________________________________________________ (2 marks)
b. (i) Explain the role of the acid found in part marked B.
______________________________________________________________________
_____________________________________________________________ (2 marks)
(ii) Name two enzymes produced by B.

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NAME: _______________________________________ CLASS: 2 _____

_________________________________________________________________________
________________________________________________________________ (2 marks)
27. a. State two functions of cerebrum.
_________________________________________________________________________
________________________________________________________________ (2 marks)
b. Explain two effects of drug and alcohol to the nervous system.
_________________________________________________________________________
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________________________________________________________________ (4 marks)
28. Study the figure below and use it to answer the questions that follow:

a. What name is given to the condition experienced by the person above?

____________________________________________________________ (1 mark)
b. State any one way of controlling the condition above.
____________________________________________________________ (1 mark)
c. One of the causes of the condition above is feeding on a diet of simple sugars. Explain
how simple sugars contribute to the condition?
______________________________________________________________________
______________________________________________________________________
_____________________________________________________________ (2 marks)
29. a. What are sense organs?
_________________________________________________________________________
_________________________________________________________________ (1 mark)
b. Give two functions of the skin.
_________________________________________________________________________
________________________________________________________________ (2 marks)
c. State two ways of caring for the skin.
_________________________________________________________________________
________________________________________________________________ (2 marks)

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NAME: _______________________________________ CLASS: 2 _____

30. The figure below shows an experiment setup to investigate a certain condition necessary for
photosynthesis. Study it and answer the questions that follow:

a. Suggest the aim of the investigation.

______________________________________________________________ (1 mark)
b. Explain the role of sodium hydroxide in the investigation.
______________________________________________________________________
______________________________________________________________________
_____________________________________________________________ (2 marks)
c. When the leaves were tested for starch from above the plant, what were the possible
results? (Explain your answer)
______________________________________________________________________
______________________________________________________________________
_____________________________________________________________ (2 marks)

Section C (30 Marks)

Answer all questions in an essay form

31. Explain five general causes of deficiency diseases. Your answer should be in an essay form
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NAME: _______________________________________ CLASS: 2 _____

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32. Describe the roles of micro-organisms in nature.
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NAME: _______________________________________ CLASS: 2 _____

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33. Describe an experiment that would prove that the gas produced in leaves is really oxygen. In
your essay you may include procedures, expected results and conclusion in an essay form.
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NAME: _______________________________________ CLASS: 2 _____

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___________________________________________________________________ ( 10 marks)

END OF QUESTION PAPER

NB: This paper contains 10 printed pages.

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