Waec Agricultural Science 2015 Past Questions and Answers

Question 61:

• WAEC 2015

(a) Describe the cultivation of Cowpea under the headings:
(i) soil requirement;
(ii) method of propagation;
(iii) spacing [ 3 marks ]
(b) Name one disease and two field pests of Cowpea. [ 3 marks ]
(c) State four cultural methods of controlling crop pests. [ 4 marks ]
(d) State four human activities that promote deforestation in West Africa. [ 4 marks ]
(e) Describe each of the following agro-forestry practices:
(i) alley cropping;
(ii) ley farming. [ 4 marks ]

Question 62:

• WAEC 2015

(a) In an incubator, 1,500 eggs were arranged on the trays for incubation. During candling, 25 eggs were discovered to be unfertilized. At hatching, 475 chicks were male and the remaining were female. Calculate the percentage of:
(i) unfertilized eggs;
(ii) fertilized eggs;
(iii) male chicks;
(iv) female chicks. [ 6 marks]
(b) State four signs that indicate the approach of parturition in a cow. [ 4 marks ]
(c) Mention four vegetative materials that could be used in propagating ornamental
plants. [ 4 marks ]
(d) State four advantages of grafting. [ 4 marks ]

Question 63:

• WAEC 2015

(a) Mention three functions of a farm manager. [ 3 marks ]
(b) Use the information in the demand schedule below to answer the questions that follow.

Price of Cowpea (Le)	Quantity demanded (kg)
200	160
120	80
40	5
10	15
20	25

(i) Draw a demand curve from the schedule [ 4 marks ]
(ii) Use the demand schedule to explain the relationship between quantity demanded
and price. [ 2 marks ]
(c) State three advantages of the wholesaler in marketing of agricultural produce.
[ 3 marks ]
(d) Discuss the rinderpest disease under the following headings:
(i) two farm animals affected;
(ii) causative agent;
(iii) two symptoms;
(iv) one mode of transmission;
(v) one preventive measure. [ 6 marks ]