(a) What is meant by competition.

(b) Explain briefly the terms: (i) interspecies competition: (ii) intra species competition.

(c) Explain two ways each by which the toad/frog is structurally adapted to the following: (I) obtaining me food (ii) protection (iii) movement. 

(a) List three transmittable characters in: (I) human beings (ii) plants

(b) State three ways in which genetics has contributed to improvement of agriculture.

(c) A homozygous tall parent was crossed with a homozygous short 

(a) Make a labelled diagram of the vertical section of the mammalian tooth.

(b) Describe the role of the following in mammalian nutrition: (i) teeth; (ii) tongue ; (iii) saliva; (iv) stomach .

(c) Describe how to test for protein in a food sample 

(a) With reference to the food chain, explain the role of the followings; (i) green plants; (ii) herbivores; (iii) carnivores; (iv) decomposers

(b) With the aid of diagram, describe the carbon cycle. 
 

(a) What is a cell?

(b) Describe briefly the structure of DNA.

(c) Describe the process of mitosis

(d) What is the importance of mitosis to living organisms?