WAEC Agricultural Science 2015 Past Questions

(a) Differentiate between land ownership by leasehold and land ownership by freehold. [ 2 marks ]

(b) Mention five ways in which non-governmental organizations contribute to agricultural
development in West Africa. [ 5 marks ]

(c) State four ways in which rural-urban migration has hindered agricultural development in West Africa. [ 4 marks ]

(d) Mention three socio-economic uses of land. [ 3 marks ]

(e) Explain two ways by which each of the following environmental factors affect agricultural production:

1. Soil organisms;
2. soil texture. [ 4 marks ]

(a) State two advantages and two disadvantages of using biogas as a source of farm power. [ 4 marks ]

(b) Mention eight simple farm tools. [ 4 marks ]

(c) List two common storage structures and two processing structures that could be found on a farmstead in West Africa. [ 4 marks ]

(d) Explain the term denitrification. [ 2 marks ]

(e) Describe the following components of the soil:
(i) mineral matter;
(ii) organic matter. [ 4 marks ]

(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 ]

(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 ]

(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.

(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 ]

(a) State four reasons why the prices of most agricultural produce are unstable in West
Africa. [ 4 marks ]

(b) Explain the following agricultural extension methods:
(i) method demonstration;
(ii) agricultural shows. [ 4 marks ]

(c) Discuss the cercospora leaf spot disease under the following headings:
(i) crop affected;
(ii) causative agent;
(iii) mode of transmission;
(iv) two symptoms;
(v) one preventive measure. [ 6 marks ]

(d) State four advantages of selection as a method of crop improvement. [ 4 marks ]