KCSE Exam – Biology Paper 1 (2008)


August 21, 2011 Facebook Twitter LinkedIn Google+ KCSE Exams


KCSE Exam

1. Name the tissues in plant responsible for:

(a)    Transport of water and mineral salts;

(b)   Transport of carbohydrates;

(c)    Primary growth.                                       (3 marks)

2      State the importance of following processes that takes place in the nephron of a human kidney:

(a)    Ultra filtration:                                          (1 mark)

(b)   Selective re absorption.                         (1 mark)

3     (a) Name a disease of the liver whose symptoms is jaundice.                                         (1 mark)

(b) State the causative agent of:

(i)   Cholera;                                     (1 mark)

(ii)   candidiasis.                             (1 mark)

4    The diagram below show a red blood cell that was subjected to a certain treatment.

(a)    Account for shape of the cell at the end of the experiment. (2 marks)

(b)   Draw a diagram to illustrate how a plant cell would appear if subjected to the same

  1. (1 mark)

5     (a) State two factors that affect enzymatic activities. (2 marks)

(b) Explain how one of the factor stated in (a)

Above affects enzymatic activities. (1 mark)

6     (a) What is meant by non-disjunction? (1 mark)

(b)  Give two examples of continuous variation in humans.  (2 marks)

7     (a) What is fossil?  (1 mark)

(b) How does convergent evolution occur? (3 marks)

8     The diagram below show s a stage in mitosis in a plant cell.

(a)   Name the stage of mitosis. (1 mark)

(b)   Give two reasons for your answer in (a) above. (2 marks)

(c)   Name the part of the plant from which the cell used in the preparation was obtained. (1 mark)

9    Give three factors that determine the amount of energy a human being requires in a day.     (3 marks)

10    (a)   Name the antigens that determine human blood group.  (2 marks)

(b)   State the adaption that enables the red blood cells to move in blood capillaries. (1 mark)

11    (a)  What is homeostasis?                            (1 mark)

(b)  Name three processes in human body in which homeostasis is involved?     (3 marks)

12    State two function of the endoplasmic reticulum. (2 marks)

13  (a)  Name the part of the retina where image is formed. (1 mark)

(b)  State two characteristics of the image formed on the retina. (2 marks)

14      Describe the three characteristics of a population. (3 marks)

15   Explain what happens when there is oxygen in human muscles. (2 marks)

16   The diagram below represents a set up that was used to investigate a certain process in a plant.

(a)  State the process that was being investigated. (1 mark)

(b)  State a factor that would affect the process. (1 mark)

17    Account for the following phases of a sigmoid curves of growth of an organism:

(a)  Lag phase; (1 mark)

(b)  Plateau phase. (1 mark)

18    How is the epidermis of a leaf of a green plant adapted to its function? (2 marks)

19   The diagram below represents a tissue obtained from an animal.

(a)  Identify the tissue. (1 mark)

(b)  State the function of the tissue named in (a) above.(1 mark)

20   (a) what is single circulatory system?    (1 mark)

(b)  Name an organism which has single circulatory system.  (1 mark)

(c)  Name the opening to the chamber of the heart of an insect. (1 mark)

21    (a)   what is seed dormancy? (1 mark)

(b)  Name a growth inhibitor in seed. (1 mark)

22    state two characteristics of aerenchyma tissue. (2 marks)

23    the diagram below shows a human tooth.

(a)  Identify the tooth.(1 mark)

(b)  How is the tooth adapted to its function? (1 mark)

(c)  State the role of the following vitamins in the human body:

(i)  C     ……………………………………………………… (1 mark)

(ii) K      ……………………………………………………… (1 mark)

24   name the sites where light and dark reactions of photosynthesis take place.  (2 marks)

Light reaction …………………………………………………..

Dark reaction ……………………………………………………

25   giving a reason in each case, name the class to which each of the following organism belong: (4 marks)

Bean plant ……………………………………………

Reason       …………………………………………

26   state one use of each of the following excretory products of plants:

(a)     colchicines;                 (1 mark)

27       explain how anaerobic respiration is applied in sewage treatment.    (1 mark)

28     (a) state the mode of asexual reproduction in yeast. (1 mark)

(b) Distinguish between protandry and protogyny.  (2 mark)

29    state a function of amniotic fluid. (1 mark)

30    the diagram below shows two fused bones of a mammal.

(a)  Identify the fused bones. (1 mark)

(b)  Name the

(i)  Bone that articulates at the point labeled F.  (1 mark)

(ii)  The hole labeled G. (1 mark)



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