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Kcse 2008 Biology Paper 1 Question Paper

Kcse 2008 Biology Paper 1

Course:Secondary Level

Exam Year:2008

KCSE 2008 BIOLOGY PAPER 1
QUESTIONS
1. Name the tissues in plants responsible for:
(a) Transport of water and mineral salts
(b) Transport of carbohydrates
(c) Primary growth ( 3 mks)
2. State the importance of the following processes that take place in the
nephrons of a human kidney
(a) Ultra filtration ( 1 mk)
(b) Selective reabsorption ( 1 mk)
3. (a) Name a disease of the liver whose symptom is jaundice ( 1 mk)
(b) State the causative agent of:
(i) Cholera ( 1 mk)
(ii) Candidiasis ( 1 mk)
4. The diagrams below show a red blood cell that was subjected to a certain
Treatment
At start At the end of experiment
(a) Account for shape of the cell at the end of the experiment ( 2 mks)
(b) Draw a diagram to illustrate how a plant cell would appear if subjected to
the same treatment ( 1 mk)
5. (a) State two factors that affect enzymatic activities ( 2 mks)
(b) Explain how one of the factors stated in (a) above affects enzymatic
Activities ( 1 mk)
6. (a) What is meant by non- disjunction? ( 1 mk)
(b) Give two examples of continuous variation in humans ( 2 mks)
7. (a) what is fossil ( 1 mk)
(b) How does convergent evolution occur ( 3 mks)
8. The diagram below shows a stage in mitosis in a plant cell
(a) Name the stage of mitosis ( 1mk)
(b) Give two reasons for your answer in (a) above ( 2 mks)
(c) Name the part of the plant from which the cell used in preparation was
Obtained ( 1 mk)
9. Give three factors that determine the amount of energy a human being
.
108
require in a day ( 3 mks)
10. (a) Name the antigens that determine human blood groups ( 2 mks)
(b) State the adaptation that enables the red blood cells to move in blood
Capillaries ( 1 mk)
11. (a) What is homeostasis? ( 1 mk)
(b) Name three processes in the human body in which homeostasis is
Involved ( 3 mks)
12. State two functions of the endoplasmic reticulum ( 2 mks)
13. (a) Name the part of retina where image is formed ( 1mk)
(b) State two characteristics of the image formed on the retina ( 2 mks)
14. Describe the three characteristics of a population ( 3 mks)
15. Explain what happens when there is oxygen debt in human muscles( 2 mk)
16. The diagram below represents a set up that was used to investigate certain
process in a plant
(a) State the process that was being investigated ( 1 mk)
(b) State a factor that would affect the process ( 1 mk)
17. Account for the following phases of a sigmoid curve of a growth of an
organism
(a) Lag phase ( 1 mk)
(b) Plateau phase ( 1 mk)
18. How is the epidermis of a leaf of a green plant adapted to its function
( 2 mks)
19. The diagram below represents a tissue obtained from an animal
.
109
(a) Identify the tissue ( 1 mk)
(b) State the functions of the tissue named ( a) above ( 1mk)
20. (a) what is a single circulatory system ( 1 mk)
(b) Name an organism which has single circulatory system
( 1 mk)
(c) Name the opening to the chamber of the heart of an insect
( 1 mk)
21. (a) What is seed dormancy ( 1 mk)
(b) Name a growth inhibitor in seeds ( 1 mk)
22. State two characteristics of aerenchyma tissue ( 1 mk)
23. The diagram below shows a human tooth ( 2 mks)
(a) Identify the tooth ( 1 mk)
(b) How is the tooth adapted to its function ( 1 mk)
(c) State the role of the following vitamins in the human body
(i) C ( 1 mk)
(ii) K ( 1 mk)
24. Name the sites where light and dark reactions of photosynthesis take place
( 2 mks)
Light reaction
Dark reaction
25. Giving a reason in each case, name the class to w which each of the
following organisms ( 4 mks)
Bean plant
Reason
Bat
Reason
.
110
30. The diagram below shows two fused bones of a mammal
(a) Identify the fused bone ( 1 mk)
(b) Name the
(i) Bone that articulates at the point labelled F ( 1 mk)
(ii) The hole labelled G ( 1 mk)

Kcse 2008 Biology Paper 1 Question Paper

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