(a) (i) Name the two stages involved in photosynthesis.
(ii) Write an equation to represent the first stage of photosynthesis.

(b) (i) List six modes of nutrition in organisms.
(ii) Name one feature that makes feeding possible in the following organisms: I. Paramecium; II Spirogyra; Ill Rhizopus; IV Tape worm.

(c) Define the term balanced diet.

(d) (i) State three characteristics of enzymes.
(ii) in a tabular form, indicate the source, substrate acted upon and the product of the following enzymes: ptyalin and pepsin.
 

(a) List four floral parts of a flower.

(b) (i) In a tabular form, state five differences between wind and insect pollinated flowers.
(ii) Give one example of each.

(c) (i) State three agents of fruit and seed dispersal.
(ii) Give an example of fruits or seeds dispersed by each agent

(d) (i) Define the term "hormones.
(ii) Name one plant hormone.
(iii) State two effects of plant hormones. 
 

(a) mention four caste found among termite nests

(b)(i) state one role of each caste to the colony.
(ii) mention two ways by which termites are of economic importance to man

(c)(i) mention two types of courtship behaviour in lower animals
(ii) state two importance of courtship behaviour in the reproduction of lower animals

(d) Describe briefly the courtship behaviour exhibited by Agama lizard

(a) Define the term organic evolution

(b) Outline the contribution of 
(i) Larmack
(ii) Darwin to organic evolution

(c) List three evidences of organic evolution

(d) Explain the role of
(i) Mutation
(ii) Isolation in the form of new species

1.State two Structural differences between the nymph of cockroach and an adult cockroach.

2. List three characteristic features of cross-pollinated flowers.

3. Give a reason why the testes in most mammals are located outside the body cavity

4. State the structure used by each of the following organism for movement: (a) Ameba (b) Euglena (c) Paramecium.

5. List three types of stimuli detected by the sensory nerve endings on the skin.

6. Explain the function of the ciliary muscles of the eye.

7. How many "daughter" cells are produced in (a) meiosis (b) mitosis?

8. The graphs show the limit of tolerance of some species of fish I, Il and lll to water temperature. (a) From the graphs, what can you deduce about the geographical range of species i and ili? (b) What is the optimal temperature for growth of species I, Il and IIl?

9. Name three abiotic factors which plants growing close to each other may compete for?

 10. Name four excretory products of plants.

11. (a) (i) identify specimens A, B,C and D without reasons. (ii) To which class of animals do specimens B and C belong? (ii) State the excretory structures possessed by each of specimens B and D. (b) State two external features used by specimen C for gaseous exchange. (c) Mention (i) three structural similarities (i) two structural differences between specimens B and C (d) Make a labeled drawing 8-10 cm long of the ventral view of specimen A. 

12. (a) identify specimen E without reasons. (b) Make a labeled drawing 8-10cm long of the cut surface of specimen  E.

 13.(a) identity specimens F, GH, I, J and K without reasons. (b) Copy and complete the table below into your answer booklet

Put a tick ( ✓ ) where appropriate