(a) Define: (i) demand; (ii) price elasticity of demand [4 marks]

(b) Explain why the demand curve slopes downwards. [2 marks]

(c) List four agents of agricultural marketing [4 marks]

(d) State two advantages and one disadvantge of each of the following agricultural extension teaching methods; (i) newspapers; (ii) television [6 marks] 

(a) List four factors that cause a change in supply of agricultural produce [4 marks]

(b) Distinguish between fixed cost and variable cost giving two examples in each case [6 marks]

(c) Example the following agricultural extension teaching methods: (i) posters; (ii) field trips. [6 marks]

(a)(i) What is an agricultural system [2 marks] (ii) List five agricultural systems practised in West Africa. [5 mar] 

(b) State four ways in which non-governmental organisations contribute to agricultural production. [4 mar

(c) Give one function of each of the following components of an incubator: (i) counter (ii) thermostat; (iii) hygrometer (iv) egg tray; (v) heater. [5 marks each]

(a) Enumerate six factors that limit food production in West Africa. [6 marks]

(b) State three advantages and  three disadvantages of solar energy as a source of farm power. [6 marks]

(c) List four tractor-coupled implements [4 marks] 

(a) State four characteristics of clay. [4 marks]

(b) Mention four effects of drought on plant growth and development [4 marks]

(c) List two symptoms of phosphorus deficiency in crops. [2 marks]

(d) State three ways in which each of the following soil properties is important in crop production:(i) soil reaction; (ii) soil temperature. [6 marks]