WAEC 2010 Agricultural Science Questions and Answer

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1. Which of the following systems allows for individual ownership?

  • Land pledge system.
  • Freehold system.
  • Leasehold system.
  • Tenancy at the will of government.

2. The development of agriculture in West Africa is not generally affected by

  • ignorance.
  • religious beliefs.
  • poor marketing.
  • population size.

3. The most common grazing system in West Africa is

  • continuous grazing.
  • strip grazing
  • rotational grazing.
  • zero grazing

4. Which of the following is not a role of government in agricultural production?

  • Provision of labour.
  • Provision of subsidies.
  • Building of storage facilities.
  • Provision of loans and credits.

5. The main reason for establishing game reserves is to prevent wildlife from

  • being poached.
  • being hunted periodically.
  • attacking tourists.
  • becoming extinct.

6. Which of the following practices promotes agricultural development?

  • Growing disease-resistant crops.
  • Planting late-maturing crop varieties.
  • Banning importation of pesticides.
  • Encouraging communal land tenure system.

7. The biotic factor which derives much benefit from livestock and reduces productivity is a

  • predator.
  • parasite.
  • pathogen.
  • microbe.

8. The removal of top soil from a small area of soil surface due to the impact of raindrops is known as

  • sheet erosion.
  • rill erosion.
  • gully erosion.
  • splash erosion.

9. Which of the following groups of crops grows best in the savanna zones of West Africa?

  • Cotton, millet and groundnut.
  • Cocoa, kola and oil palm.
  • Cotton, cocoa and guinea corn.
  • Banana, rubber and millet.

10. High temperature and pressure convert sandstone to

  • basalt.
  • quartzite.
  • coal.
  • limestone.

11. Which of the following factors is both a physical and a chemical agent of rock weathering?

  • Temperature.
  • Animal.
  • Water.
  • Oxygen.

12. Physical properties of clay soil include

  • low porosity and low capillarity.
  • high porosity and high capillarity.
  • low porosity and high capillarity.
  • high porosity and low capillarity.

13. Streak disease of maize is caused by

  • virus.
  • nematode.
  • fungus.
  • bacterium.

14. In the carbon cycle, atmospheric carbon dioxide is replenished by

  • respiration.
  • transpiration.
  • lightning.
  • denitrification,

15. The following farming practices expose the soil to agents of erosion except

  • bush burning.
  • land clearing.
  • crop rotation.
  • overgrazing.

16. Which of the following effects is not due to water-logging?

  • Inhibition of crop development.
  • Enhancement of leaching.
  • Inhibition of the activities of soil microorganisms.
  • Wilting of crop roots.

17. An advantage of sprinkler irrigation is that

  • it assists farmers to raise a greater variety of crops.
  • it is easy to instal.
  • large areas of land can be irrigated.
  • it can be afforded by peasant farmers.

18. The main sources of farm power in West Africa are

  • wind, solar and mechanical.
  • human, animal and mechanical.
  • mechanical, solar and human.
  • electrical, mechanical and solar.

19. The function of the mouldboard in a mouldboard plough is to

  • cut a horizontal line in the soil.
  • give support to the share.
  • invert the furrow slice.
  • keep the equipment steady during operation.

20. The objectives of farm mechanization include the following except to

  • obtain higher farm yield.
  • carry out farm operations quickly.
  • improve the quality of farm produce.
  • produce disease-resistant crop varieties.

21. The survey instrument used for measuring horizontal and vertical angles on the field is the

  • theodolite.
  • prismatic compass.
  • offset staff.
  • arrow.

22. A farmstead should be located close to a source of water because of the following reasons except

  • reduction of overhead cost.
  • operation of efficient irrigation system.
  • processing of farm produce.
  • erosion of farm structures.

23. Which of the following activities are cultural practices? I. Harrowing II. Filling-in III. Mulching

  • I and II only.
  • I and III only.
  • II and III only.
  • I, II and III.

24. Training of yam vines is important to

  • ease passage in the farm.
  • suppress weeds.
  • increase photosynthesis.
  • prevent rodent attack.

25. Grafting involves the

  • fusion of the gametes of two plants.
  • inducement of rooting from two stems.
  • transfer of a bud from one plant to another.
  • joining of two parts from related plants.

26. Which of the following products is not from coconut?

  • Sandy.
  • Copra.
  • Oil.
  • Jam.

27. The most convenient method of fertilizer application used when crops have been planted in rows is

  • foliar application.
  • broadcasting.
  • drilling.
  • ring placement.

28. Which of the following is not a characteristic of weeds?

  • Resistant to trampling.
  • Produces numerous seeds.
  • Seeds have short period of viability.
  • Aggressive growth habit.

29. Coffea spp grows best

  • on lowlands.
  • on highlands.
  • in mangroves.
  • in rain forests.

30. A major raw material of the paper industry is

  • pulp.
  • gum.
  • latex.
  • bark.

31. Which of the following farming practices are cultural methods used to control pests and diseases? I Crop rotation II. Mixed farming III. Monoculture

  • I and II only.
  • I and III only.
  • II and III only.
  • I, II and III.

32. The recommended spacing for oil palm cultivation is

  • 9m triangular.
  • 9m x 9m.
  • 12m x 12m.
  • 12m triangular.

33. Which of the following plants is a pasture legume?

  • Cynodon plectostachyus.
  • Stylosanthes giacihs.
  • Panicum maximum.
  • Pennisetum purpureum.

34. Mould growth on cereal grains stored in damp conditions is caused by

  • bacterium.
  • fungus.
  • virus.
  • nematode.

35. Corms, rhizomes and tubers are examples of

  • underground stem.
  • underground roots.
  • modified leaves.
  • aerial stems.

36. Which of the following operations takes place in a ginnery?

  • Production of cotton seed oil.
  • Detoxication of cotton seed.
  • Separation of cotton seeds from lint.
  • Production of cotton seed cake.

37. The maize stem borer is best controlled by

  • destroying and burning all the affected crops.
  • physical barriers on the farm.
  • using scare crows on the farm.
  • hand-picking from infested.

38. Disease resistance is one of the aims of crop improvement because it

  • enables crops withstand attack by pathogens.
  • makes the harvesting of crops easy.
  • enables crops adapt to climatic conditions.
  • leads to early maturity in crops.

39. Which of the following characteristics is not important in beef cattle breeding?

  • High fertility.
  • Increased butter-fat percentage.
  • Good feed conversion efficiency.
  • High yield of lean meat.

40. The milk hormone in farm animals is called

  • adrenalin.
  • oestrogen.
  • oxytocin.
  • progesterone.

41. Rabbits can digest roughages because they possess

  • large intestine.
  • enlarged caecum.
  • long colon.
  • small rectum.

42. Natural immunity can be conferred on newly-born animals through

  • vaccination.
  • administration of antibiotics.
  • feeding with colostrum.
  • strict sanitation.

43. The average gestation period in sheep is

  • 30 days.
  • 50 days.
  • 150 days.
  • 270 days.

44. Feed given to animals solely to sustain their live weight is called

  • balanced ration.
  • maintenance ration.
  • production ration.
  • weaner ration.

45. Which of the following feedstuffs requires much processing before being fed to animals?

  • Cassava.
  • Sorghum.
  • Maize.
  • Groundnut.

46. Mating in poultry is known as

  • servicing.
  • treading.
  • tupping.
  • breeding.

47. The causal organism of anthrax in farm animals is known as

  • Baccillus anthracis.
  • Bmcella abortus.
  • Mycobacterium spp.
  • Aspergillus spp.

48. Which of the following fish species is found in fresh water?

  • Sardine.
  • Tilapia.
  • Salmon.
  • Herring.

49. The disease which affects only animals other than humans is

  • anthrax.
  • rinderpest.
  • brucellosis.
  • trypanosomiasis.

50. Prevention of animal diseases involves the following practices except

  • rearing disease-resistant stock.
  • carrying out rotational grazing.
  • identifying the source of diseases.
  • feeding balanced ration.

51. Which of the following organisms is an ectoparasite of farm animals?

  • Topography of the site.
  • Soil type.
  • Availability of water.
  • Availability of manure.
  • ich of the following factors is the least important in selecting a site for a fish-pond?

52. The fish preservation method, which results in the greatest water loss is

  • freezing.
  • steaming.
  • salting.
  • smoking.

53. An infectious disease of livestock characterized by sudden death and black bloody discharge from the nose, mouth and eyes is known as

  • anthrax.
  • brucellosis.
  • pleuropneumonia.
  • tuberculosis.

54. The table below is a schedule for the market demand and supply of pumpkin.

PRICE (₦)QUANTITY DEMANDED (units)QUANTITY SUPPLIED (units)
511015
109035
206060
303988
4020110

Use it to answer questions 55 and 56

Determine the market surplus when the unit price of pumpkin rises to  ₦40.00

  • 110.
  • 20
  • 60
  • 90
  • 110
  •  
  •  
  •  

55. What is the equilibrium price of pumpkin?

  • =N= 10.
  • =N= 20.
  • =N= 30.
  • =N= 40.

56. The source of credit with the most unfavourable terms of payment in West Africa is

  • financial institutions.
  • governments.
  • marketing boards.
  • money lenders.
  • 57. Which of the following items is a liability to a farm?
  • Accounts payable.
  • Cash in bank.
  • prepayment.
  • Accounts receivable.

58. Which of the following problems are associated with agricultural marketing in West Africa?

I. Seasonality of produce II. Transportation of produce III. Access to credit.

  • I and II only.
  • I and III only.
  • II and III only.
  • I, II and III.

59. The extension method that will benefit only the literate farmers is

  • radio.
  • television.
  • demonstration.
  • newspapers.

60. Which of the following farming practices are cultural methods used to control pests and diseases? I. Crop rotation II. Mixed farming III. Monoculture

  • I and II
  • I and III
  • II and III
  • I, II and III

ANSWERS

  1. B
  2. B
  3. A
  4. A
  5. D
  6. A
  7. B
  8. A
  9. A
  10. B
  11. C
  12. C
  13. A
  14. A
  15. C
  16. D
  17. C
  18. B
  19. C
  20. D
  21. A
  22. D
  23. D
  24. C
  25. C
  26. D
  27. D
  28. C
  29. C
  30. A
  31. C
  32. A
  33. B
  34. B
  35. B
  36. C
  37. A
  38. A
  39. B
  40. C
  41. B
  42. C
  43. C
  44. B
  45. D
  46. C
  47. A
  48. B
  49. D
  50. C
  51. C
  52. D
  53. A
  54. C
  55. B
  56. A
  57. A
  58. D
  59. D
  60. B

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