SECTION B

41. Give any four ways in which plants depend on each other.

42. a) What is the use of the hairs found in the nose of a human being?

b) Name any one disease that attacks the respiratory system.

c) What happens to the diaphragm when we breathe:

i. In?

ii. Out?

43. a) What are communicable diseases?

b) Give any two examples of communicable diseases.

c) State any one practice in a community that would help in the control of communicable diseases.

44. a) Give any two ways in which bacteria are useful to human beings.

b) Give any two ways in which bacteria are dangerous to human beings.

45. Give any two ways of controlling the spread of the following diseases without using drugs:

a) AIDS

b) Malaria

46. The diagram below shows a stone being put into a measuring cylinder A containing water. The level of water rose to that shown in cylinder B.

Use the information to answer the questions that follow.

a) Work out the volume of the stone.

b) If the mass of the stone is 60g, calculate its density.

47. a) Give any three characteristics of living things.

b)How are plants different from animals in the way get their food?

48. The diagram below shows the seven colours of a rainbow. Complete the missing colour bands in the space provided in the diagram below.

49. Mulokole kept one goat and one rabbit in different houses. He used to put different types of food in their houses. He recorded the number of times they ate each type of food. The following was his daily record:

Animal	Number of times each food was eaten
	Sweet potato leaves	Cassava leaves	Sorghum leaves	Grass	Maize	Banana Leaves
Goat	3	1	0	3	2	4
Rabbit	4	2	1	2	3	2

 

a) What was the most favourable food for the:

i) Goat?

ii) Rabbit?

b) What was the least favourable food for the rabbit?

c) If Mulokole were to use only one type of food, which one would be the most favourable for both the goat and the rabbit?

50. In the space provided below, draw a diagram to show the germination of;

a) A monocotyledonous seed.

b) A dicotyledonous seed.

c) What is the importance of a cotyledon in a seed?

d) In which way is a seed important to a plant?

51. a) Why does blood move from the heart to the lungs before it moves round the body?

b)Give any one function of each of the following:

i. White blood cells

ii. Red blood cells

iii. Platelets

52. The diagram belowis of an electric circuit. Use it to answer the questions that follow:

 

a) Name the parts labelled Y and X in the diagram.

i) Y

ii) X

b) Apart from light, give any other form of energy produced by the part labelled X and Y is closed.

c) Show with the help of arrows the flow of current in the above diagram.

53. Health Committee members in your school visited an old man's home and found out that the home did not have the main requirements for proper sanitation.

Suggest any four activities they should carry out to ensure proper sanitation in the old man's home.

54. a) Give any two ways in which an umbilical cord is important to a baby in the womb.

b)Suggest any two things a pregnant woman must do to promote the health of her baby in the womb.

55. Explain how to prepare Oral Rehydrate Solution (ORS)