(a) Distinguish between the following agricultural systems: (i) monoculture and monocropping (ii) shifting cultivation and land rotation. [6 marks]

(b) State four problems of commercial agriculture in West Africa. [4 mark ]

(c) Mention four uses of the farm tractor. [4 marks] (d) List four indigenous methods of land preparation. [2 marks ]

(a) Explain briefly how the following affect agricultural production:(I) agricultural education and extension (ii) environmental degradation. [8 marks] 

(b) Enumerate three problems associated with communal land tenur system. [3 marks] 

(c) List four components of an incubator. [2 marks]

(d) Mention one storage structure for each of the following farm produce: (i) yam tubers (ii) cowpea seeds (iii) fresh fish. [3 marks] 

(a) Explain the term chemical weathering of rocks.  [2 marks]

(b) Discuss four processes of chemical weathering of rocks [10 marks]

(c) State four ways in which soil temperature is important for crop growth (4 marks)

(a) Give two reasons for each of the following practices undertaken by some West African farmers (i) movement of herdsmen and their flocks southwards to the rain forest zone during the dry season (4 marks) 

(ii) Preference for the use of simple farm tools over farm machinery (4 marks)

(b)(i) Identify four problems associated with the movement of herdsmen (4 marks)

(ii) Suggest a solution to each of the problems. [4 marks]

 (a) Outline six benefits derived from growing ornamental plants, [6 marks]
 (b) State four symptoms of cassava mosaic disease. [4 marks] 
(c) Explain the following terms as used in forest management. (i) selective exploitation (ii) regeneration (iii) taungya farming [6 marks]