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

1

(a) ldentify specimens N, O and Q.

Specimen N;             Specimen O;                Specimen Q;

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(b) Name one host of each of specimens N, O and Q.

(c) Name four economic importance of each of specimens N and Q.

(d) State four control measures for specimen O.

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2

(a) Give the botanical name of each of specimens I (Common wireweed) J (coatbuttons), K (Giant star grass), and L (cogongrass)

(b) Describe Specimen K

(c) Describe the process of preparing silage from specimen K

(d) Mention two methods for the effective control of specimen L on a farm.

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3

(a)Name specimens C, D, F, G and M

Specimen C;     Specimen D;         Specimen F;       Specimen G;      Specimen M;

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(b) Name the fishing equipment that can be improvised by assembling specimens C,D,F,G and M.

(c) State four advantages of using the equipment named in (b) above.

(d) Explain how the equipment named in (b) is used.

(e) List five other pieces of equipment that can perform a similar function as the one named in (b). 

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4

Observe the experimental set-ups A and B in which 120ml of water was made to drain through each of the different soils contained in the funnels.

Use the experimental set-ups to answer Questions (a) – (d).

(a) State the volume of water collected in each of the measuring cylinders in setups A and B.

(b) Calculate the volume of water retained in each of the set-ups A and B.

(c) Calculate the percentage of:
(i) water which percolated through each of the soils in set-ups A and B
(ii) water retained in each of the soils in set-ups A and B.

(d) Which one of the soils in set-ups A and B will be better for crop production? Give three reasons for your answer.

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5

(a) State two methods of calculating depreciation of farm machines. (b) List four roles of capital in agricultural production. (c) Explain five major roles played by middlemen in the marketing of agricultural produce.

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6

(a) Discuss the effects of rural-urban migration on agricultural production.

(b) Explain how: (i) demand affects agricultural production given that supply is constant (ii) supply affects agricultural production when demand is constant.

(c) State two effects of: (i) demand on farmers’ income when price is constant (ii) supply on farmers’ income when demand is constant. (d) State five roles expected of a farm manager in a farm enterprise. 

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7

(a) Describe the construction of a fish pond (b) State eight measures necessary for the efficient operation of an egg incubator. 

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8

(a) Enumerate three major organs in each of the thoracic and abdominal cavities of farm animals (b) State two functions of the nervous and one function of the reproductive systems (c) Explain the importance of the following systems in farm animals: (i) circulatory system (ii) respiratory system (iii) digestive system.

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9

(a) Define the terms budding and grafting (b) List four materials required for budding (c) Give two reasons why the improvement of crops by selection may not produce the desired results (d) State four disadvantages of asexual reproduction and four advantages of sexual reproduction in crop plants.

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10

Discuss the following practices in crop production: (a) transplanting (b) shading (c) supplying filling-in (d) nursery.

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11

(a) State three methods of irrigating a small nursery. (b) Enumerate three factors to be considered in the choice of each of: (i) surface irrigation method (ii) sub-surface irrigation method. (c) .State two advantages of subsurface irrigation (d) Enumerate five ways by which the build-up of diseases could be reduced on an irrigated farm. 

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12

(a) Define land. (b) State the two major classifications of land based on uses and give two examples in each case. (c) List six factors that influence the availability of land for agricultural production and explain two of the factors.

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13

(a) State eight reasons why agriculture has not been fully mechanized in West Africa. (b) List four characteristics of: (i) subsistence agriculture (ii) commercial agriculture.

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14

(a) State four effects of feed shortage on animal production. (b) List four areas of specialization in agriculture, and state two contributions of each to agricultural development. 

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15

Why would an extension officer prefer the use of television to radio when introducing a new technology to farmers?

  • A. the extension officer can get immediate feedback
  • B. the farmer can observe the various steps involved
  • C. radio programmes are not reliable and clear enough
  • D. it is cheaper to use television than radio
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16

One of the functions of agricultural extension is

  • A. cultivation of farmers farmlands
  • B. cobstruction of farmers farmsteads
  • C. organization and coordination of credit sources
  • D. running of the country's formal education system
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17

Which of the following activities is not correct about extension agents?

  • A. educating farmers on the use of improved techniques
  • B. teaching farmers how to plant their crops
  • C. training school leavers to become professional farmers
  • D. teaching farmers how to prepare and apply compost manure
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18

The equilibrium price of rice is the price at which

  • A. ita demand exceds supply
  • B. its supply exceeds demand
  • C. its supply equals demand
  • D. consumers cannot buy the quality they want
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19

In the event of increased government subsidies, the farmer’s production cost

  • A. falls,hence supply increases
  • B. falls, hence supply decreases
  • C. rises, hence supply increases
  • D. falls, hence supply decreases
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20

The functions of a farm manager include the following except

  • A. decision making
  • B. coordination of farm activites
  • C. supervision of farm labourers
  • D. financing agricultural projects
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21

The method of fish preservation in which most of the moisture is lost is

  • A. frying
  • B. salting
  • C. drying
  • D. canning
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