Waec Agricultural Science 2013 Past Questions and Answers

Question 61:

• WAEC 2013

Use the information provided in the table above to answer this question Calculate the percentage change in the total quantity supplied if the decreases from N5,000.00 per kg to N 3,000.00 per kg

A. 85%
B. 71%
C. 41%
D. 29%

Question 62:

• WAEC 2013

(a) State four benefits of agriculture to the economy of West African countries. [4marks]
{b). Enumerate four functions of agro-service centres in your country [4marks]
(c) Outline four routine tractor maintenance practices. [4marks]
(d) State two functions of each of the following parts of the farm tractor (i) three-point linkage (ii)hydraulic lever[4marks]

Question 63:

• WAEC 2013

(a) Explain the term farm mechanization [2marks]
(b) Mention three advantages and three disadvantages of farm mechanization. [6marks]
(c) Give two merits of the use of draught animals in farm operations. [2marks]
(d) Outline three roles of science and technology in agricultural development under the following headings. (i)pest and disease contlrol; (ii)meteorology and climatology. [6marks]

Question 64:

• WAEC 2013

(a) Mention two sources of irrigation water [2marks]
(b)Enumeratoin two advantages and two disadvanteges of irrigating farmlands [4marks]
(c)List two ways by which the soil loses nutrients. [2marks]
(d)Give two reasons for manuring in crop production [2marks]
(e)State two ways by which each of the following envrionmental factors affect agricultural production: (i) temperature: (ii) soil micro-organisms; (iii) wind. [6marks]

Question 65:

• WAEC 2013

(a)List three edaphic factor that influence crop growth. [3marks]
(b) Explain the following terms as used in soil and water conservation: (i)gravitational water(ii)hygroscopic water [4marks]
(c) State two deficiency symptoms of each of the following nutrient elements in crops:(i)nitrogen; (ii) phosphorus; (iii)potassium [6marks]
(d) State three benefits derived from draining farmlands. [3marks]