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

(a) ldentify specimen P, Q, and R.

Specimen P;                Specimen Q;            Specimen R;

(b) Name the part of the host where each of specimens P, Q and R can be found.

(c) Mention three ways by which specimen P is adapted to survive in the host.

(d) State three effects of specimen Q on the host.

(e) List four diseases transmitted by specimen R.

(f) State four control measures of specimen R.

(a) ldentify specimens M, N, and O by their common names and their scientific names.

Specimen M;             Specimen N;              Specimen O;

(b)(i) Name one pest and one disease that attack the crop from which specimen O is obtained.

(ii) State one control measure for each of the pests and diseases mentioned in (b)(i).

(c) Mention three uses of specimen M.

(d) State two methods of preserving specimen N.

(a)(i) Mention the field operation that could be performed Using specimens G, H, I and J

(ii) Name three other pieces of equipment that may be added to specimens G, H, l, and J to perform the operation you have mentioned in (a)(i).

(iii) State one precaution that should be taken when using specimen J.

(b). State two uses of each specimen K and L.

Specimen K;        Specimen L;

(ii) State two structural differences between specimens K and L.

(iii) Mention two problems that could result from leaving specimen L on the field after use.

(a) State the major elements contained in each of specimens A, B and C.

(b) Give three uses of specimens A and B.

(c) Explain three ways in which specimen C is important in agriculture.

(d) Describe three physical differences between specimens B and C.

(a) (i) What is agricultural extension? [2 marks] 
   (ii) State five demerits of co-operative societies.[5 marks] 

(b) (i) Discuss three effects of rural-urban migration on agriculture. [6 marks] 
(ii) Suggest three ways by which the problems of rural-urban migration could be solved [3 marks]

(a)   (i)          Explain the term/arm credit. 
       (ii)          List five sources of farm credit. 

(b) An outbreak of a strange poultry disease is reported in your community. 
There is a possibility of the disease spreading to other parts of the country. 
        (i)  Mention the three main extension teaching methods that could be used to create awareness among farmers about the disease.  [3 marks] 
        (ii) Which of the main extension teaching methods is most appropriate for creating awareness about the disease outbreak?  [1 mark] 
         (iii) Give two reasons for your choice of extension teaching method in 9(b Xii). [2 marks] 
         (iv) Mention three problems that could be encountered in the use of the selected extension teaching method. (3 marks)

(a) Give three advantages and three disadvantages of the deep litter system of poultry management. [6 marks]

(b)   State three reasons for carrying out each of the following animal husbandry practices: 
  (i)   castration of goats;
(ii) creep feeding of pigs.                                                                                                         [6 marks]

(c) Name four local breeds of cattle reared in West Africa.                                            [4marks] 

(a) State four ways in which rangeland is important in livestock production. [4 marks] 
(b) If the recommended grazing area per cattle is 3m x 3m. Calculate in hectares the carrying capacity of the rangeland illustrated in the diagram below. [6 marks]

(c)           State two benefits of each of the following management practices in animal production: 
               (i)           dipping; 
               (ii)          vaccination; 
               (iii)         artificial insemination.                                                                                                        [6 marks]

(a)  Distinguish between a field pest and a storage pest. [2 marks] 

 (b) Give two reasons for early harvesting of maize from the field. [2 marks] 

 (c) Describe each of the following methods of crop improvement: 
                              (i)              introduction; 
                              (ii)             cross breeding. [6 marks] 

 (d) List six factors that should be considered in selecting a crop variety for your locality. [6 marks]

(a)(i) Define vegetative propagation. [2 marks] 
(ii) Give three advantages and three disadvantages of vegetative propagation. [6 marks] 

(b) State four cultural methods used for controlling crop pests in the field. [4 marks] 

(c) Enumerate four harmful effects of chemical pest control. [4 marks] 

(a) (i) Define the term soil tillage. [2 marks] 
(ii) Distinguish between primary tillage and secondary tillage. [2 marks] 

(b) Outline three roles of each of the following soil management practices: 
(i) Green manuring; 
(ii) Mulching. [6 marks] 

(c) Give six reasons for carrying out irrigation in crop production. [6 marks]

(a) What is soil consistency? 

(b) Explain how each of the following soil properties influences crop growth: 
          (i)        soil texture; [2 marks] 
(ii) soil pH. [4 marks]

(c) (i) List four methods by which soil fertility could be maintained. [2 marks] 
(ii) Explain two ways in which each of the methods listed in 3(c)(i) contributes 
to the maintenance of soil fertility. [8 marks] 

(a) In a tabular form, list ten differences between subsistence agriculture and commercial agriculture. [10marks]
(b) State one advantage and one disadvantage of the following sources of farm power: 
                (i)           wind; 
                (ii)          internal combustion engine; 
                (iii)         electricity. [6 marks]

(a) State three ways in which science and technology have contributed to agricultural 
development through each of the following: 
              (i)           Crop protection; 
              (ii)          Climatology and meteorology.                             [6 marks] 
(b) Give two functions of each of the following farm machines and implements: 
              (i)           bulldozer; 
              (ii)          combine harvester; 
              (iii)         tractor; 
              (iv)         sprayer;

                (v)           planter. –                                                      [10 marks]

The main function of an agricultural extension agent is to

A cowpea farmer obtained a loan of D50,000.oo from his co-operative society at an interest rate of 5%. Calculate the interest to be paid on the borrowed capital after one year?

Land in agricultural business is a durable asset because

The most important factor which determines the demand for cowpea by consumers is the

Which type of loan should a farmer obtain to start an oil palm plantation?

A young female cattle which has never calved is known as

Tsetse flies are of economic importance in livestock production because they transmit