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

(a) Which of specimens F, G, and H is the most common source of energy in livestock rations?

(b) Mention one ingredient in specimen I which has a laxative effect on farm animals.

(c) State three important feed ingredients in specimen I essential for bone and teeth formation in livestock.

(d) Name four types of specimen l and the class of poultry to which each type is fed.

(e) Name four farm animals that feed largely on specimen J.

(f) State four plant protein sources used in livestock feeds.

(a) ldentify specimen E.

Specimen E;

(b) State four damages caused to crops by the specimen.

(c) Briefly describe its life cycle

(d)(i) Name the stage of development at which the specimen is most dangerous to crops.
(ii) Give one reason for your answer.

e) List three control measures of the specimen.

(a) ldentify specimens B, C, and D.

Specimen B;            Specimen C;              Specimen D;

(b) Give two observable physical properties of each.

(C) State two main nutrients supplied by each of specimens B and Ď.

(d) State two methods of application of specimen C on the field.

Study carefully the experimental set-up labelled A and use it to answer questions (a) – (d)

(a) State the aim of the experimental set-up.

(b) Describe briefly the procedure for carrying out the experiment. 

(c) Describe briefly your observation on the experimental set-up.

(d) Outline how the different soil particle sizes can be estimated.

(a) Explain the term “marketing.” (b) State five importance of marketing in agriculture. (c) Mention five marketing functions. (d) In which four ways can the marketing of agricultural produce be encouraged?

Explain the following terms used in agricultural production: (a) hired labour; (b) fixed capital; (c) working capital; (d) management. 

(a) Define the term “disease.” (b) State the difference between resistance and susceptibility to diseases. (c) Enumerate four economic importance of animal disease. (d) List three factors which determine the degree of resistance of an animal to a disease. (e) Outline three conditions that may inactivate a pathogenic organism. 

(a) (i) What is culling? (ii) Give three reasons why culling is practised in livestock management. (b) State three advantages and three disadvantages of each of the following management systems in poultry production: (i) deep litter system; (ii) battery cage system. 

(a) In a tabular form, name one fungal disease, one viral disease and one pest of any four of the following crops: (i) citrus; (ii) banana; (iii) tomato; (iv) yam; (v) groundnut. (b) State six general control measures of diseases of crops.

(a) Describe briefly four methods of weed dispersal. (b) Describe three mechanical and three cultural methods of weed control. 

(a) State three functions of nitrogen in crop plants. (b) Mention four effects of excess soil nitrogen and three effects of nitrogen deficiency on plants. (c) Apart from lightning, state three other ways by which nitrogen is added to the soil? (d) List six soil micro nutrients.

(a) State five effects. of each of the following practices on crop production: (1) irrigation; (ii) drainage. (b) List four methods of surface irrigation. (c) Give two main reasons why surface drainage is often necessary in crop production.

(a)List six types of land tenure systems. (b) Discuss five reasons why the government should enforce the land use legislation. 

(a ) State five objectives each (i) of Farm Settlement Scheme and (ii) Agricultural Development Programme. (b) State roles of cooperative organisations in agricultural production.

In the mass method of agricultural extension, information is passed to farmers through the following channels except

Agricultural extension programme

A maize farmer obtains a loan of N120,000.00 at an interest rate of 9% to be repaid in one year.Calculate the interest to be paid on the loan.

Farm accounts help the farmer to

Farmers often find it difficult to obtain loans from banks for agricultural projects because they

On a curve for the law of diminishing returns, maximum output is obtained at the

In a crop production enterprise, a fixed factor of production could be the