The diagram below is an illustration of a cocoa pod infected by a disease.

Study the diagram carefully and answer the questions that follow.

1. Name the disease illustrated on the pod.

2. Mention the causative organism of the disease.

3. Describe one symptom of the disease.

4. State one farm practice that promotes the spread of the disease.

5. Give one practice farmers could adopt to control the disease.

The diagram below is an illustration of a cuboid with faces A, B and C shown and sides a, b and c indicated.I, II, III and IV.

Study the diagram carefully and answer the questions that follow.

1. Measure and record the length of each of the sides labelled a, b and c in centimeters.

2. Determine the area of each of the faces A and B.

3. If the weight of the cuboid is 100N, determine the pressure exerted by the cuboid in N/cm² when it lies on

   α) face A;

   β) face B.

4. From your results in (iii), explain how pressure exerted by a body changes with the area on which it lies.

The diagram below is an illustration of three different types of teeth, labelled A, B and C in humans.

Study the diagram carefully and answer the questions that follow.

1. Name each type of teeth labelled A, B and C.

2. State one function of the type of teeth labelled A, B and C.

3. State two observable differences between the tooth labelled A and that labelled B.

4. Mention two ways of ensuring proper dental care.

The diagram below is an illustration of an experimental set-up used to separate water and salt from salt solution.

Study the diagram carefully and answer the questions that follow.

1. Name each of the parts labelled I, II, III and IV.

2. Name the method of separation used.

3. State one function of each of the parts labelled II and III.

4. Name three physical processes that are involved in the separation of the mixture.