Agricultural Science JAMB, WAEC, NECO AND NABTEB Official Past Questions

a) (i) identify specimens P and R [2 marks]

Specimen P:

Specimen R:

(ii) State three reasons why the use of specimen P is not recommended in a brooder house [3 marks]

(iii) Mention two other materials that could be used in place of specimen P in a brooder house [2 marks]

(iv) What is the name given to the product formed when poultry droppings mix with specimen P? [1 mark]

(v) State four uses of the product mentioned in (a) (iv) in agricultural production [4 marks]

(b) State three ways of controlling specimen R in crop production. (3 marks]
 

Forth maize seeds were sown on a raised bed and thirty-five seeds germinated.

(a) (i) Calculate the percentage of the maize seeds that germinated [2 marks]

(ii) What is the percentage of the maize seeds that did not germinate? [2 marks]

(b) State four conditions that could have enhanced the germination of the thirty-five seeds. [4 marks]

(c) Suggest five reasons why some of the seeds did not germinate [5 marks]

(d) Give two industrial uses of maize seeds.

(a) (i) identify specimen H, I, J and K [4 marks]

(ii) State two uses of each of specimens J and k [4 marks]

(iii) State three general ways of maintaining specimens H and I [3 marks]

(iv) State four precautions to be taken when using specimen J [4 marks]

(a) (i) identify specimens A(Clayey soil) and  B(Sandy soil) by the feel method. [2 marks]

(ii) Name two crops that would thrive well on each of specimens A and B. [2marks]
(iii) Mention three ways by which specimen B can be improved. (3 marks]

(b) (i) identify specimens C and D. (2 marks]

(ii) State three non-ways in which specimen C is important in crop production. [3 marks]

(iii) State three uses of specimen B in agriculture. [3 marks]

 (a) Explain the term animal nutrition, [2 marks]

(b) State four functions of oestrogen in animal reproduction [4 marks]

(c) Explain each of the following methods of animal improvement: (i) selection: (ii) breeding; (iii) introduction [6 marks]

(d) What are ornamental plants? [2 marks]

(e) State four vegetative methods that could be used to propagate ornamental plants. [4 marks] 

(a) Highlight five roles of agricultural extension in agricultural development in West Africa. [5 marks]

 (b) Outline four problems faced by agricultural extension workers in West Africa. [4 marks] 

(c) Discuss the cultivation of groundnut under the following headings: (i) soil requirements (ii) method of propagation: (iii) two methods of storage [5 marks]

 (d) Mention two field pests and two storage pests of maize. [4 marks] ,

(a) What is elasticity of demand? [2 marks]

(b) Explain each of the following terms as used in agricultural production: (i) collateral: (ii) farm inventory record. [4 marks]

(c) State three merits and three demerits of the retailer in the marketing of agricultural produce, [6 marks]

(d) State two roles of each of the following hormones in animal reproduction: (i) testosterone; (ii) progrestrone. [4 marks]

(e) List four ways of preserving fish. [4 marks] 

(a) Discuss the cultivation of cassava under the following headings: (i) soil requirements; (ii) spacing (iii) one disease; (iv) one pest. [5 marks]

(b) Differentiate between natural pasture and artificial pasture. [2 marks]

(c). Explain the term disease as used in crop production. [2 marks] 

(d)  State Mendel’s law of independent assortment of genes. [2 marks]

(e) Explain the term regeneration as a forest management practice. [2 marks]

(f) State five effects of deforestation. [5 marks] 

(a) Explain each of the following terms; (i) farmstead (ii) secondary tillage. [4 marks] 

(b) State one function of each of the following parts of a mouldboard plough: (i) hitch; (ii) furrow wheel; (iii} disc coulter; (iv) plough share; (v) mouldboard. [5 marks] 

(c) Describe one natural process that takes carbon away from the atmosphere. [2 marks] 

(d) Outline three ways of replenishing plant nutrients in the soil. [3 marks]

(e) State two deficiency symptoms of calcium in crops. [2 marks] 

(f) List four soil organisms. [2 marks] 

(a) Explain the term commercial farming. [2 marks]

(b) Mention two agricultural produce used by each of the following agro-based industries: (i) canning industry; (ii) beverage industry; (iii) feed mill. [6 marks]

(c) State two aims of each of the following organizations involved in agricultural development in West Africa: (i) International Livestock Centre for Africa (ILCA) (ii) International Institute for Tropical Agriculture (IITA)

(d) What is surface irrigation? [2 marks]

(e) Describe the following horizons of the soil profile: (i) horizon A; (ii) horizon D. [2 marks] 

Ornamental crops are used for the following purposes except

Forest regulations are formulated in order to encourage

Water in a fish pond is made suitable for fish by

In hook and line fishing, the bait is fixed onto the

Calculate the annual depreciation of a farm machinery with a total depreciation of D63,000 and a useful life of 5 years

Which of the following pairs are mass methods of extension?

Dissemination of new ideas by agricultural extension workers can be effective if they

In agricultural production, farm gate price is mostly enjoyed by

Which of the following factors affect the supply of agricultural produce? I Improvement in technology II Increase in rainfall III Decrease in temperature IV input cost

The following symptoms were observed in a bull: l watery discharged from eyes and nostrils: II Sore in the mouth and nostrils; III excessive saliva with offensive odour; IV sever diarrhoea with blood stand farces.Which of the following measures would best control the disease?

The following symptoms were observed in a bull: l watery discharged from eyes and nostrils: II Sore in the mouth and nostrils; III excessive saliva with offensive odour; IV sever diarrhoea with blood stand farces.What disease is the bull suffering from?