Waec Agricultural Science 2011 Past Questions and Answers

Question 56:

• WAEC 2011

The main function of an agricultural extension agent is to

A. Assist farmers to export their produce
B. Provide managerial services to farmers
C. Educate farmers on innovations in agriculture
D. Act as a link between farmers and middlemen

Question 57:

• WAEC 2011

(a) State three ways in which science and technology have contributed to agricultural
development through each of the following:
(i) Crop protection;
(ii) Climatology and meteorology. [6 marks]
(b) Give two functions of each of the following farm machines and implements:
(i) bulldozer;
(ii) combine harvester;
(iii) tractor;
(iv) sprayer;
(v) planter. - [10 marks]

Question 58:

• WAEC 2011

(a) In a tabular form, list ten differences between subsistence agriculture and commercial agriculture. [10marks]
(b) State one advantage and one disadvantage of the following sources of farm power:
(i) wind;
(ii) internal combustion engine;
(iii) electricity. [6 marks]

Question 59:

• WAEC 2011

(a) What is soil consistency?
(b) Explain how each of the following soil properties influences crop growth:
(i) soil texture; [2 marks]
(ii) soil pH. [4 marks]
(c) (i) List four methods by which soil fertility could be maintained. [2 marks]
(ii) Explain two ways in which each of the methods listed in 3(c)(i) contributes
to the maintenance of soil fertility. [8 marks]

Question 60:

• WAEC 2011

(a) (i) Define the term soil tillage. [2 marks]
(ii) Distinguish between primary tillage and secondary tillage. [2 marks]
(b) Outline three roles of each of the following soil management practices:
(i) Green manuring;
(ii) Mulching. [6 marks]
(c) Give six reasons for carrying out irrigation in crop production. [6 marks]