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WAEC (WASSCE) 2018

2018 WAEC (WASSCE) Agricultural Science Past Questions

The 2018 WAEC (WASSCE) Agricultural Science past questions with answers: 50 objective questions from the 2018 paper in the DeeepSolve question bank, each with its answer behind "Show answer". Try each question before you check, then practise the paper as a timed WAEC-style CBT.

Past questions © the examination body (JAMB/WAEC/NECO). DeeepSolve is not affiliated with them. Rights holders: see /copyright.

Questions

  1. 1.

    Which of the following problem does not cause wastage of farm produce?

    1. A.Use of crude farm tools
    2. B.Poor transportation
    3. C.Inadequate processing facilities
    4. D.Inadequate storage facilities
    Show answer

    Answer: A. Use of crude farm tools

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  2. 2.

    Thinning is a farm operation in which

    1. A.empty spaces where seeds did not germinate are replanted
    2. B.the number of seedlings per stand is reduced to one or two
    3. C.fertilizers and manures are applied to crops
    4. D.effort is made to control pests
    Show answer

    Answer: B. the number of seedlings per stand is reduced to one or two

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  3. 3.

    Assuming that brown colour is dominant over black colour in cowpea, what percentage of the F1 will have brown colour , if a homozygous brown cowpea is crossed with a homozygous black cowpea?

    1. A.100%
    2. B.75%
    3. C.50%
    4. D.25%
    Show answer

    Answer: A. 100%

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  4. 4.

    Which of the following practices ensures that a young animal has resistance against diseases?

    1. A.Regular visits to the veterinary doctors
    2. B.Giving the animal a maintenance ration
    3. C.Regular dipping of animal
    4. D.Giving the animal access to colostrums
    Show answer

    Answer: D. Giving the animal access to colostrums

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  5. 5.

    A groundnut variety produces a steady yield of 350kg per hectare. What will be the yield of the variety on a 10-hectare farm?

    1. A.35kg
    2. B.350kg
    3. C.3,500kg
    4. D.7,000kg
    Show answer

    Answer: C. 3,500kg

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  6. 6.

    Vitamin K deficiency in farm animals causes

    1. A.night blindness
    2. B.sterility in both sexes
    3. C.delayed blood clotting
    4. D.delayed ovulation
    Show answer

    Answer: C. delayed blood clotting

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  7. 7.

    Which of the following agricultural extension methods is aimed at reaching an individual farmer at a particular time?

    1. A.film show
    2. B.farm visit
    3. C.electronic media
    4. D.field trip
    Show answer

    Answer: B. farm visit

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  8. 8.

    Complete eradication of tsetse flies will be an effective control measure for

    1. A.aspergillosis
    2. B.trypanosomiasis
    3. C.fowl pox
    4. D.swine fever
    Show answer

    Answer: B. trypanosomiasis

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  9. 9.This question needs a diagram, table or passage that we don't have yet, so it isn't shown.

  10. 10.

    A groundnut plant showing stunted growth with yellow or mottled leaves is likely to be infected with

    1. A.blight
    2. B.tikka
    3. C.rosette
    4. D.anthracnose
    Show answer

    Answer: C. rosette

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  11. 11.

    Which of the following implements is not a tractor-coupled implement?

    1. A.plough
    2. B.sheller
    3. C.ridger
    4. D.harrow
    Show answer

    Answer: B. sheller

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  12. 12.

    Which of the following crops is usually classified as a vegetable?

    1. A.Lycopersicon esculentum
    2. B.Ananas sativa
    3. C.Hevea brasiliensis
    4. D.Theobroma cacao
    Show answer

    Answer: A. Lycopersicon esculentum

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  13. 13.This question needs a diagram, table or passage that we don't have yet, so it isn't shown.

  14. 14.

    The chemical composition of soil is mostly influenced by

    1. A.Climate
    2. B.Time
    3. C.Topography
    4. D.Parent material
    Show answer

    Answer: D. Parent material

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  15. 15.

    One advantage of cross breeding is that the

    1. A.offspring resemble the recessive parent
    2. B.yield of the offspring may not be comparable to those of the parents
    3. C.offspring performs better than the average of the parents
    4. D.offspring cannot survive adverse environmental conditions
    Show answer

    Answer: C. offspring performs better than the average of the parents

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  16. 16.

    The use of inorganic fertilizer is preferable to organic manure because inorganic fertilizer

    1. A.improves soil structure
    2. B.releases nutrients to the soil faster
    3. C.reduces leaching of soil nutrients
    4. D.improves soil water holding capacity
    Show answer

    Answer: B. releases nutrients to the soil faster

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  17. 17.This question needs a diagram, table or passage that we don't have yet, so it isn't shown.

  18. 18.

    Which of the following practices does not replenish lost soil nutrients?

    1. A.crop rotation
    2. B.fallowing
    3. C.Liming
    4. D.Bush burning
    Show answer

    Answer: D. Bush burning

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  19. 19.

    A disadvantage of vegetative propagation is that

    1. A.plants are true to type
    2. B.fruits are small in size
    3. C.plants take a long time to mature
    4. D.diseases are easily transferred to offspring
    Show answer

    Answer: D. diseases are easily transferred to offspring

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  20. 20.

    Which of the following methods is not used in collecting semen for artificial insemination?

    1. A.Massage method
    2. B.Use of artificial insemination
    3. C.Herd mating of the animals
    4. D.Electro-ejaculation method
    Show answer

    Answer: C. Herd mating of the animals

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  21. 21.

    From the demand schedule above, what is the percentage change in price?

    1. A.33.33%
    2. B.40.00%
    3. C.50.00%
    4. D.66.67%
    Show answer

    Answer: C. 50.00%

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  22. 22.

    Ornamental plants are commonly used for the following purposes except

    1. A.for exterior decorations
    2. B.as sources of perfumes
    3. C.provision of shade
    4. D.as bedding materials for animals
    Show answer

    Answer: D. as bedding materials for animals

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  23. 23.This question needs a diagram, table or passage that we don't have yet, so it isn't shown.

  24. 24.

    An effective method of preventing viral diseases in crops is by

    1. A.treating the seeds with fungicides
    2. B.practicing crop rotation
    3. C.regular spraying of crops
    4. D.planting resistant varieties
    Show answer

    Answer: D. planting resistant varieties

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  25. 25.

    Which of the following diseases is caused by a virus?

    1. A.Brucellosis
    2. B.Trypanosomiasis
    3. C.Rinderpest
    4. D.Tuberculosis
    Show answer

    Answer: C. Rinderpest

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  26. 26.

    Which of the following statements is not a reason for providing tractor-hiring services to farmers? To

    1. A.encourage farm mechanization
    2. B.increase the area of land to be cultivated
    3. C.increase the cost of production
    4. D.boost food production
    Show answer

    Answer: C. increase the cost of production

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  27. 27.

    The survey equipment used for measuring angular distance is

    1. A.offset staff
    2. B.measuring tape
    3. C.ranging pole
    4. D.prismatic compass
    Show answer

    Answer: D. prismatic compass

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  28. 28.

    From the demand schedule, what is the percentage change in in quantity demanded?

    1. A.16.67%
    2. B.20.00%
    3. C.40.00%
    4. D.83.33%
    Show answer

    Answer: A. 16.67%

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  29. 29.

    The purpose of the part labelled I in the experiment illustrated above is to

    1. A.allow proper aggregation of soil particles
    2. B.allow even evaporation of water
    3. C.prevent water from escaping
    4. D.distribute water around the soil
    Show answer

    Answer: A. allow proper aggregation of soil particles

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  30. 30.

    Which of the following statement describes an advantage of underground drainage? It

    1. A.allows for free movement of farm machinery
    2. B.checks the growth of weeds
    3. C.improves soil texture
    4. D.increases organic matter content of soil
    Show answer

    Answer: A. allows for free movement of farm machinery

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  31. 31.

    Hibiscus and croton are examples of

    1. A.ground covers
    2. B.hedge plants
    3. C.lawn plants
    4. D.avenue trees
    Show answer

    Answer: B. hedge plants

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  32. 32.

    Which of the following farm documents is usually prepared at the end of the year?

    1. A.farm budget
    2. B.labour record
    3. C.farm inventory
    4. D.profit and loss account
    Show answer

    Answer: D. profit and loss account

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  33. 33.

    Bees are regarded as the friends of the farmer because they

    1. A.usually sting the farmer
    2. B.are harmless insects
    3. C.help in pollination
    4. D.produce nectar for human use
    Show answer

    Answer: C. help in pollination

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  34. 34.This question needs a diagram, table or passage that we don't have yet, so it isn't shown.

  35. 35.This question needs a diagram, table or passage that we don't have yet, so it isn't shown.

  36. 36.

    Which of the following statements is not true about electrical power? It

    1. A.can be generated from solar energy
    2. B.is the cleanest source of farm power
    3. C.can perform work on its own
    4. D.is capital intensive
    Show answer

    Answer: C. can perform work on its own

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  37. 37.

    The structure of loam could be described as

    1. A.single-grained
    2. B.blocky
    3. C.crumby
    4. D.platy
    Show answer

    Answer: C. crumby

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  38. 38.

    The practice of growing arable and forage crops alternately on a piece of land is called

    1. A.ley farming
    2. B.mixed farming
    3. C.alley farming
    4. D.pastoral farming
    Show answer

    Answer: A. ley farming

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  39. 39.

    Which of the following is an example of igneous rock?

    1. A.Basalt
    2. B.Dolomite
    3. C.Limestone
    4. D.Marble
    Show answer

    Answer: A. Basalt

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  40. 40.

    Which of the following groups of raw materials are used in textile industries?

    1. A.Guinea corn, wheat and kenaf
    2. B.Cotton, jute and wool
    3. C.Coffee, cotton and cocoa
    4. D.Wool, palm kernel and maize
    Show answer

    Answer: B. Cotton, jute and wool

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  41. 41.

    Which of the following plants is not a pasture grass?

    1. A.Pennisetum purpureum
    2. B.Axonopus compressus
    3. C.Stylosanthes gracilis
    4. D.Panicum maximum
    Show answer

    Answer: C. Stylosanthes gracilis

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  42. 42.This question needs a diagram, table or passage that we don't have yet, so it isn't shown.

  43. 43.This question needs a diagram, table or passage that we don't have yet, so it isn't shown.

  44. 44.

    The land tenure system which involves the outright purchase of land is

    1. A.leasehold
    2. B.communal
    3. C.freehold
    4. D.inheritance
    Show answer

    Answer: C. freehold

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  45. 45.

    A farmer observed that all his day-old chicks clustered around the source of heat in a brooder house. This observation is likely due to

    1. A.manifestation of a disease outbreak
    2. B.thirst because of inadequate water
    3. C.poor nutrition
    4. D.low temperature
    Show answer

    Answer: D. low temperature

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  46. 46.This question needs a diagram, table or passage that we don't have yet, so it isn't shown.

  47. 47.

    A beneficial effect of bush burning on the soil is the

    1. A.reduction of soil microbial activities
    2. B.exposure of soil surface to erosion
    3. C.destruction of weed seeds
    4. D.improves soil water holding capacity
    Show answer

    Answer: C. destruction of weed seeds

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  48. 48.

    What is the price elasticity of demand of the commodity from the demand schedule above?

    1. A.0.3
    2. B.0.4
    3. C.0.5
    4. D.0.6
    Show answer

    Answer: D. 0.6

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  49. 49.

    The aim of the experiment illustrated above is to

    1. A.determine soil texture
    2. B.ascertain water content of the soil
    3. C.examine the structure of the soil
    4. D.determine soil acidity
    Show answer

    Answer: C. examine the structure of the soil

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  50. 50.This question needs a diagram, table or passage that we don't have yet, so it isn't shown.

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