(a) List five non-government agricultural organizations in West Africa.

(b) State four ways in which agriculture and industry are interrelated

(c) Give one function of each of the following parts of a disc plough

(i) disc (ii) beam (iii) furrow wheel (iv) disc scraper (v) hitch

(d) State four disadvantages of animal power

(a) State five factors that should be considered in choosing an irrigation system in West Africa.

(b) Mention four problems associated with irrigation in West Africa

(c) A rectangle-shaped farmland has a length of 0.4 km and a breadth of 2,400 m, calculate the area of the farmland in hectares

(d) List one primary and three secondary tillage implements

(a) Draw a well labelled diagram of the water cycle

(b) Mention two deficiency symptoms of phosphorus in crops

(c) Using the table below, classify the follow-ing insect-pests according to their modes of feeding (i) weevil (ii) locust (iii) scale insect (iv) armyworm (v) earworm (vi) cotton stainer (vii) green spidermites (viii) thrips (ix) capsids (x) yam beetle

(a) Discuss maize smut disease under the follow-ing headings:

(i) causal organism (ii) mode of trans-mission (iii) two symptoms (iv) two cultural control measures

(b) Enumerate four forest management oractices in West Africa

(c) (i) State four classes of farm animals based on their uses (ii) Give one exam-ple of each class stated in (c)(i)

Discuss anthrax disease under the following headings (i) causal organism (ii) mode of transmission (iii) two symptoms (iv) two prevention and control measures

(b) (i) List four sources of plant protein in live stock feeds (ii) Give three examples of forage legumes that could be found in rangelands in West Africa

(c) Mention five characteristics of labour as a factor of agricultural production.