1.Define the following terms: (i) Accommodation (ii) Metamorphosis 

2. Why is the wall of the left ventricle of the heart thicker than that of the right ventricle?

3. Why is sugar contained in the urine of a person with diabetes mellitus?

4.Which hormone controls water reabsorption in the kidney?  

5. Explain the significance of hemoglobin in respiration

Study the diagram below and use it to answer Question 6

6. (a) What is the aim of the experiment illustrated in the diagram above?

(b) Name the liquid labeled I. (c) Name two materials that can be used as living tissue (d) (i) What would happen to the level of solution inside the living tissue in both A and B if the set-up is allowed to stand for about three hours? (ii) Give a reason for your.answer  (c) What is the function of set-up B? 

7. (a) What is pest? (b) List three plant pests and name the plant attacked by each

Use the diagram below to answer Question 8

 

8 (a) identify the organism represented in the diagram

 (b) List three features that adapt the organism to its environment.

 9. (a) (i) identify specimens A and B without giving reasons. (ii) What are the possible habitats of specimens A and B? (b) Remove the wings of specimen A and make a large labeled drawing 12cm to 15 long of it. (C) In a tabular form, give three differences between specimens A and B (d) Give two economic importance of specimen A and one of specimen B

10. (a) What types of leaves are specimens C,D and E?

(b) () identity the leaf arrangement in specimen D. (ii) What type of venation is exhibited in specimen C?

 (c) Observe specimens C and E with a hand-lens. Which one has more stomata? (d) (i) State the likely habitat of the plants from which specimen C was obtained.

(ii) Of what importance are specimens C, D and E to the plant? [1mark] (e) Making use of the hand lens, identify specimens F, G and H

 (f) State their modes of nutrition?  (g) State two Observable differences between specimens F andG|.

11. (a) identify specimens I,J and K stating organism from which each has been obtained.

(b) List two functions of each of the specimens.  (C) Arrange tne specimens in order of evolutionary advancement.