(a) What is growth?

(b) State two differences each between;
(i) growth in plants and animals
(ii) metamorphosis in housefly and toad.

(c) Name two hormones each involved in:
(i) plant growth
(ii) animal growth.

(d) State the effects of the hormones named in (c) above.

(e) Name the type of germination which takes place in:
(i) monocotyledonous plants
(ii) dicotyledonous plants.

(f) In a tabular form state four differences between the forms of germination named in (e) above. 

(a) State one function of each of the following structures:
(i) Arteries
(ii) Capillaries
(iii) Veins
(iv) Xylem
(v) Phloem

(b) Describe the changes that take place in the composition of human blood as it passes through the:
(i) Lungs
(ii) Liver
(iii) Kidneys
(iv) Small intestine

(c) List the cellular components of blood. 

 (a) What is transpiration?

(b)(i) Name two types of transpiration
(ii) List two factors which affect the rate of transpiration.

(c) Describe the mechanisms of opening and closing of the stomata.

(d) State:
(i) two similarities and (ii) two differences between transpiration and sweating. 
 

(a) Explain the following terms:
(i) Population
(ii) Competition
(iii) Succession

(b)(i) State three sources of noise pollution.
(ii) List two ways by which noise pollution can be reduced.

(c) State three effects each of the following pollutants on humans: (i) smoke (ii) sewage 
 

(a) Describe the main stages of mitotic division.

(b) State four ways in which mitosis is important to living organisms.