WAEC Agricultural Science 1992 past questions

Checked by the Skolra question team · Last updated 23 October 2026

Ten questions from the 1992 WAEC Agricultural Science paper, with answers and explanations. We hold 55 questions from this paper, and the Skolra app has all of them.

WAEC Agricultural Science 1992 questions and answers

1. 1.Which of the following animals is not normally bred in West Africa for the product indicated beside it?
   1. A
      Poultry – Eggs
   2. B
      Pig – Wool
      Correct
   3. C
      Goat – Meat
   4. D
      Cattle – Milk
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   Answer: B

   Pig – Wool is the mismatched pair, so it is the one NOT normally bred for the product indicated.

   In West Africa, animals are kept for specific, well-known products:

   Goats are reared mainly for meat (chevon) — a correct pairing.
   Cattle are reared for milk (as well as meat and hides) — a correct pairing.
   Poultry (fowls) are reared for eggs (and meat) — a correct pairing.

2. 2.Which of the following is not a biotic factor affecting agricultural production?
   1. A
      Rainfall
      Correct
   2. B
      Weeds
   3. C
      Pests
   4. D
      Diseases
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   Answer: A

   Biotic factors are the living things in the environment that affect crop and animal production — organisms such as pests, weeds, disease-causing agents (pathogens), predators and pollinators. Abiotic factors are the non-living, physical/climatic elements such as rainfall, temperature, sunlight, humidity and soil type.

3. 3.Which of the following is not a source of agricultural finance in Nigeria?
   1. A
      Personal savings
   2. B
      Co-operative societies
   3. C
      Taxation
      Correct
   4. D
      Commercial banks
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   Answer: C

   Taxation is not a source of agricultural finance. Taxation is money the government collects from farmers and other citizens (e.g. as revenue for the state); it does not put capital into a farmer's hands. A source of agricultural finance must be something that supplies money or credit to the farmer to run or expand the farm business.

   So while the three banking/savings/co-operative options all genuinely inject capital into farming, taxation only removes money from the economy for government use, which is why it stands out as the one that is not a source of agricultural finance.

4. 4.An unproductive animal completely removed from the rest of the stock is said to be
   1. A
      quarantined
   2. B
      isolated
   3. C
      weaned
   4. D
      culled
      Correct
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   Answer: D

   Culling is the correct term. In livestock management, culling means permanently removing an unproductive, diseased, old or inferior animal from the herd or flock so that it no longer forms part of the breeding or production stock. A farmer culls animals that are poor layers, poor milkers, poor breeders, or simply not paying their way, so that only productive animals remain and herd quality improves.

5. 5.28. The freshly cut forage crops fed to livestock in their housing units are referred to as
   1. A
      Fodder
   2. B
      Soilage
      Correct
   3. C
      Hay
   4. D
      Silage
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   Answer: B

   Soilage is the correct answer. Soilage (also called the soiling or zero-grazing system) is the practice of cutting forage crops like grass or legumes while they are fresh and green, and carrying them straight to livestock kept in their housing units (pens, stalls, paddocks) instead of letting the animals graze in the field.

6. 6.Which of the following group of diseases mostly affect goats in Nigeria?
   1. A
      African swine fever, swine erysipelas and hog cholera
   2. B
      Peste des petits ruminants, pneumonia and foot rot
      Correct
   3. C
      Rinderpest, trypanosomiasis and anthrax
   4. D
      Newcastle disease, fowl pox and coccidiosis
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   Answer: B

   Peste des petits ruminants (PPR, locally called "kata"), pneumonia and foot rot are the group of diseases that mostly affect goats (and other small ruminants) reared in Nigeria. PPR is a highly contagious viral disease of goats and sheep causing fever, discharge, mouth sores and diarrhoea; pneumonia affects the respiratory system especially in poorly ventilated pens; and foot rot is a bacterial infection of the hoof common in goats kept on wet, muddy ground.

   So a candidate who confuses which animal group each disease belongs to would wrongly pick one of these other options.

7. 7.Feed carotene is usually converted into
   1. A
      Vitamin D
   2. B
      Vitamin K
   3. C
      Vitamin C
   4. D
      Vitamin A
      Correct
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   Answer: D

   Carotene is the yellow-orange pigment found in green forage, yellow maize and other feedstuffs. It is called a provitamin because the animal's body (mainly in the intestinal wall and liver) converts it into vitamin A after it is absorbed.

8. 8.Which of the following will not help milk let-down in a lactating dairy cow?
   1. A
      Frightening the cow with loud noise during milking
      Correct
   2. B
      Allowing the calf to suckle briefly before milking
   3. C
      Washing the udder with warm water before milking
   4. D
      Gently massaging the udder before milking
   Show answerHide answer

   Answer: A

   Milk let-down is a reflex action: the hormone oxytocin is released from the cow's pituitary gland and makes the muscle cells around the udder's alveoli squeeze milk into the cisterns, where it can be drawn or sucked out.

   So warm water washing, calf suckling and gentle massaging all help let-down, while frightening the cow with loud noise is the one practice that will not help it.

9. 9.What is the purpose of wildlife conservation?
   1. A
      To increase the number of livestock reared on the farm
   2. B
      To prevent wild animals and plants from extinction and ensure their continued existence for future use
      Correct
   3. C
      To encourage the clearing of forests for urban development
   4. D
      To provide more farmland for the cultivation of arable crops
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   Answer: B

   Wildlife conservation means the protection, management and wise use of wild animals (and the plants that make up their habitat) so that they do not disappear from the earth.

10. 10.Which of the following statements is not correct about agricultural production?
    1. A
       Agricultural production is restricted to the cultivation of crops alone
       Correct
    2. B
       Agricultural production includes crop farming, livestock rearing, forestry and fishery
    3. C
       Agricultural production supplies raw materials to agro-based industries
    4. D
       Agricultural production requires factors such as land, labour, capital and management
    Show answerHide answer

    Answer: A

    Agricultural production is restricted to the cultivation of crops alone is the statement that is not correct. Agricultural production is a broad term that covers crop production, animal (livestock) production, forestry and fishery all together -- it is never limited to growing crops only.

The questions come from past JAMB, WAEC and NECO papers. We use software to help write the answer options and explanations, and every answer is checked twice before it goes on the site. How we check

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Practise all 55 questions we hold from the 1992 paper, on a timed CBT screen

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