SECTION B

41. In the diagram below, two insects were placed in water as shown.

a) I) Which insect died?

ii) Give a reason for your answer in (a) above.

b) In which way are the insects shown in the diagram harmful to man?

c) Give any other insect that causes the harm similar to that in (b) above.

42. a) After it has rained, earthworms come out of their holes. Why do they come out?

b) Give two reasons why an earthworm is very important to a farmer.

c) Why does a worm die if oil is poured on its body?

43. Give any four ways in which fish can be preserved.

44. The diagram below shows the way in which one of the systems of the human body work. Use it to answer the questions that follow.

 

a) Name the system.

b) What does a balloon represent?

c) What does the polythene paper represent?

d) What would happen to the polythene paper if air filled the balloon?

45. Some bacteria are useful and others are harmful. Give an example of each:

a) i) Useful bacteria to a farmer.

ii) Harmful bacteria to man

b) Give any two examples of when bacteria are useful in a home.

46. The diagrams below are of three pests. Use them to answer questions (a) and (b) below.

 

a) Name two of the pests A and B above.

b) What is the disadvantage of the above insects to a farmer?

47. Match the items of group A with those of group B by completing the table below.

A B

Heart Sensory organs

Kidney Memory

Skin Carbon dioxide

Lung Circulation of blood

Brain Urine

Complete the table below:

 

A	B
a) ......................... b) Skin c) .......................... d) Lung	Circulation of blood ............................ Memory ............................

 

48 a) Name materials used to measure the volume of an irregular object.

b) How would you get the mass of an object if its density is 6g/cc and volume is 10cc?

49. The diagram below shows an underground stem.

 

a) State the type of underground stem shown in the diagram.

b) State the function of the parts labelled A, B and C.

50. a) Name two practices that have led to the destruction of wetlands.

b)What is the difference between contour ploughing and mulching?

c)How are the two practices in (b) similar?

51. The diagram below shows an electric circuit. Use it to answer the questions that follow.

a) Name part K.

b) Name part P

c) Give any two types of energy that are produced at Q when P is closed.

52. The diagram below shows the human arm. Study it and answer the questions that follow.

A) Name the joint labelled R.

B) Name the bone labelled S.

C) What happens to muscles T and X when the fore arm is raised?

53. As a pupil in a school, you are a member of the school health committee. What do you expect to do to make in the school?

54. a) In the list of objects: rabbit, bacteria, sun, pig and plant,

i) Name a producer

ii) Name a primary consumer

iii) What is the role of bacteria from the above list?

b)What is the difference between a primary consumer and secondary consumer?

55. The diagram below is of an experiment performed by a P7 class. Study it and answer the questions that follow.

a) What is the experiment about?

b) What is the importance of fat pieces?

c) What happens to piece P after sometime?

d) Give a reason for your answer in (c).