State three advantages and one disadvantages of each of the following marketing agents (i) retailers (ii) Wholesalers (iii) co-operative societies.  

(a) State seven objectives of agricultural extension. (b) List the three main types of extension teaching methods and explain any two of them

(a) State three characteristics of agricultural non-governmental organizations. (b) State five objectives of each of the following: (i) West African Rice Development Agency (ii) International Institute of Tropical Agriculture (c) Mention three other non-governmental organizations involved in agricultural development.

(a) Define the term farmstead. (b) List four factors to be considered in planning a farmstead. (c) Explain the importance of the factors listed in (b) above. (d) Give two reasons for planning a farmstead.

(a) List four asexual methods of crop propagation. (b) Define the following terms: (i) mixed farming (ii) inter-cropping (iii) ley farming (c) State four advantages of each of mixed farming and inter-cropping.