SECTION B

41. (a) Give two examples of natural fertilizers

(b) State two ways in which natural fertilizers are better than artificial fertilizers.

42. The diagram below shows a flowering plant.
study and use it to answer the questions that follow

(a) To which group of flowering plants does the above plant belong?

(b)What type of root system does the plant have?

(c) State the importance of the type of root marked Y to the plant.

(d) In which one way is part W different from X in their reproductive function?

43. (a) Give any two conditions in which women are vulnerable.

(b) State any two ways in which family members care for vulnerable women.

44. (a) Name the respiratory organs which are protected by the rib cage.

(b) What happens to the rib cage during the following processes:

(i) Breathing in?

(ii) Breathing out ?

(c) Give the use of oxygen we breathe in.

45. The table below shows diseases, the vectors that spread them and the disease-causing germs. Study and complete it correctly.

 
46. (a) Give the function of each of the following parts of a modern beehive.

(i) The brood chamber………………………………………………

(ii) The honey chamber…………………………………………..

(b) Apart from being used as food, give two other ways in which honey is useful to people.

47. (a) What kind of food is made by green plants during photosynthesis?

(b)State the one raw material used by green plants for photosynthesis.

(c) How does cglorophyll important during the process of photosynthesis?

(d)Give one reason why photosynthesis does not take place at night.

48. The diagram below shows firing bricks in a kiln.

study and use it to answer the questions that follow.

(a) Name the source of heat energy used in firing the bricks.

(b)Give one reason why the bricks are covered with mud before firing starts.

(c)What is the importance of the grass put on top of the kiln during firing?

(d) State any one disadvantage of using the above method of firing bricks to the environment.

49. The table below shows parts of a human eye in A and that of a lens camera in B.

For each of the parts of the human eye, write the part of the lens camera from B which performs a similar function.

(i) Irish…………………………………………………………………

(ii) Pupil…………………………………………………………

(iii) Eye lid…………………………………………………………….

(iv) Retina……………………………………………………………..

50. (a) Which communicable disease shows signs and symptoms similar to that of tuberculosis?

(b) Name one cattle product through which tuberculosis can spread to human beings.

(c) When is the vaccine against tuberculosis administered in babies?

(d) Apart from immunization, give one other way in which the spread of tuberculosis can be controlled in humans.

51. (a)Give any two ways in which alcohol is used in hospitals.

(b) State the two effects of alcoholism to an individual.

52. (a)Apart from the respiratory gases and body wastes, name any other two materials carried in blood.

(b)Name the component of blood which transports oxygen in the human body.

(c)Which disease causing germ attacks the white blood cells in humans?

53. The diagram below shows a weather instrument.

study and use it to answer the questions that follow.

(a) Name the weather instrument shown in the diagram above.

(b) What is the use of the instrument above at a weather station?

(c) Give a reason why people are advised to

(i)put the instrument in an open ground when using it

(ii) raise the instrument 30 cm above the ground when using it

54. (a) To which class of vertebrates do toads belong?

(b) Give one way in which the breathing of a toad is different from that of a tadpole.

(c)State any two ways in which the jelly round the eggs of toads is important.

55. (a) Apart from ticks, name any one other cattle pest.

(b)State any two diseases spread by ticks to cattle

(c) Give any one way in which the tick borne diseases can be controlled.

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