Waec Agricultural Science 2012 Past Questions and Answers

Question 51:

• WAEC 2012

(a) Explain what is meant by subsistence agriculture. (2 marks)
(b) Discuss briefly the interdependence of agriculture and industry under the following headings?
(i) tools, implements and machinery industries; (ii) processing industries (iii) Agro-chemical industries (6 marks)
(c) What is farm surveying? (2 marks) (ii) With the aid of a diagram, explain the use of the 3, 4, 5 method in farm survey. ( 6 marks)

Question 52:

• WAEC 2012

(a) What is communal land tenure system? (2 marks)
(b) State two objectives of each of the following agricultural development programmes: (i) farm settlement schemes; (ii) river basin authorities (iii) agricultural development projects. (6 marks)
(c) (i) Distinguish between farm machinery and farm implements. (2 marks)
(ii) Give six examples each of farm machinery and farm implements (6 marks)

Question 53:

• WAEC 2012

(a) State four characteristics of a fertile soil. (4 marks)
(b) Discuss briefly three factors that affect land availability for agricultural production in West Africa. (6 marks)
(c) State four benefits of draining farm lands (4 marks)
(d) List two sources of soil nitrogen. (2 marks)

Question 54:

• WAEC 2012

(a) List four factors that affect the type of soil formed at a place (2 marks)
(b) State: (i) two agricultural uses of land
(ii)a two non-agricultural uses of land. (4 marks)
(c) Sate two functions and two deficiency symptoms of each of the following nutrients in crops: (i) nitrogen; potassium. (8 marks) \
(d) Mention two ways in which soil structure Is important in agriculture. (2 marks)

Question 55:

• WAEC 2012

(a) What is natural pasture? (2 marks)
(ii) State four characteristics of natural pastures in West Africa. (4 marks)
(b) Discuss the root knot disease of tomato under the following headings: (i) causal organism; (ii) mode of transmission; (iii) two symptoms; (iv) two prevention and control measures.(6 marks)
(c) Distinguish between grafting and budding in plant propagation. (2 marks)
(d) Give two uses of sugarcane. (2 marks)