WAEC 2014 Agricultural Science Questions and Answers

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1. ï»¿Commercial agriculture is characterized by

  • use of machines
  • small farm holdings
  • low capital investment
  • little research activity

2. The most common method of acquiring land in west africa is by

  • mortgage
  • communal ownership
  • leasehold
  • inheritance

3. The agricultural sector in west africa is plagued by poverty because

  • farmers belong to cooperative societies
  • yields obtained per annum are relatively low
  • farmers have access to credit facilities
  • the weather is highly predictable

4. The function of the seed-tube in a seed drill is to

  • transport seeds from the metering device to the furrow opener
  • control the rate of placement of seeds in the soil
  • cover seeds placed in the soil
  • open the soil for seed placement

5. The machine used for removing seeds from maize cobs is called a

  • mill
  • decorticator
  • winnower
  • sheller

6. The appropriate farm tool for lifting tomato seedlings for transplanting is the

  • dibber
  • hoe
  • hand trowel
  • hand fork

7. It is important to clean and grease plough discs after use to

  • prevent rusting
  • sharpen the discs
  • reduce friction
  • reduce the lifespan

8. Wind can be beneficial to crop production because it

  • aids weed seeds dispersal
  • aids pollination of crops
  • causes lodging of crops
  • causes rapid drying of wet soils

9. The method of surface irrigation widely used in rice fields is

  • basin irrigation
  • wild flooding
  • furrow irrigation
  • border strip

10. The practice of growing different crops in sequence on a piece of land is known as

  • rotational grazing
  • monoculture
  • crop rotation
  • mixed farming

11. Which of the following is not an effect of over-grazing on soil?

  • improvement of soil structure
  • soil compaction
  • exposure of soil to erosion
  • depletion of soil nutrients

12. The major factor affecting distribution of crops in west africa is

  • climate
  • soil
  • topography
  • disease

13. Nutrient replenishment in soil can be enhanced by

  • crop removal
  • leaching
  • erosion
  • crop rotation

14. What is the function of nitrosomonas bacteria in the nitrogen cycle?

  • ammonification
  • nitrification
  • dentrification
  • nitrogen fixation

15. A mass of decayed plant and animal wastes processed in pits is referred to as

  • green manure
  • farmyard manure
  • compost manure
  • inorganic manure

16. A major disadvantage of monoculture is that

  • soil texture is destroyed
  • soil microbes are destoyed
  • diseases and pest build up
  • farms cannot be mechanized

17. Which of the following pairs of farming systems uses bush fallowing?

  • crop rotation and land rotation
  • shifting cultivation and land rotation
  • land rotation and mixed farming
  • crop rotation and monoculture

18. Continuous soil tillage could lead to

  • increased infiltration of water
  • reduced run-off
  • breakdown of soil structure
  • improved soil texture

19. A bag of fertiliser has a ratio of 0:10:0 written on it. This means that the fertiliser is a

  • lime fertiliser
  • nitrogenous fertiliser
  • phosphate fertiliser
  • pottasium fertiliser

20. Theobroma cacao grows best in the

  • sudan savannah zone
  • humid rain forest zone
  • mangrove swamp forest zone
  • morthen guinea savannah zone

21. The following plants are forage grasses except

  • pennisetun purperum
  • panicum maximum
  • axonopus compressus
  • calopogonium mucunoides

22. Which of the following statements about budding is not true? The resulting crops

  • can withstand diverse climatic conditions
  • flower and bear fruit early
  • develop broader leaves for photosynthesis
  • are more disease resistant

23. A farm produce which does not require fermentation during processing is

  • cocoa beans
  • coffee beans
  • cassava tubers
  • rice grains

24. The offspring which will result from a cross between hetetozygous and homozygous dominant plants will be

  • 100% heterozygous
  • 70% heterozygous
  • 50% heterozygous
  • 20% heterozygous

25. Calculate the amount of maize seeds required by a farmer to cultivate 5 hectares of farmland at the recommended seed rate of 25kg/hectare.

  • 50kg
  • 75kg
  • 100kg
  • 125kg

26. Casual organisms of diseases in crop production do not include

  • viruses
  • bacteria
  • fungi
  • protozoa

27. An example of fungal disease of stored grains is

  • mould
  • streak
  • mosaic
  • damping off

28. Cultural control of crop diseases involves the following practices except

  • practicing crop rotation
  • planting disease resistant varieties
  • using pesticide
  • fallowing of farmland

29. Weeds which produce large hollow seeds would most likely be dispersed by

  • wind
  • water
  • insect
  • explosion

30. Control of maize stem borer is most effective when

  • affected crops are uprooted and burnt
  • rodenticides are applied
  • nematicides are applied
  • fertilizers are applied before planting

31. The average gestation period in rabbits is

  • 21 days
  • 26 days
  • 31 days
  • 36 days

32. The correct sequence of the passage of food through the digestive system of a ruminant is

  • reticulum omasum abomasums rumen
  • rumen omasum abomasums reticulum
  • omasum abomasums rumen reticulum
  • rumen reticulum omasum abomasums

33. The main objective of flushing in animal production is to

  • promote muscle development
  • make parturition easier
  • promote multiple births
  • make the animal lose weight

34. Pigs wallow in muddy pools of water primarily to

  • ensure adequate exercise
  • obtain forage materials
  • dislodge ectoparasites from their body
  • lower their body temperature

35. Fowls are debeaked in order to

  • reduce feed intake
  • make them grow faster
  • reduce cannibalism
  • check spread of diseases

36. A chicken that pecks at palm fruits could prevent a deficiency of vitamin

  • k
  • e
  • b
  • a

37. The common name for andropogon gayanus is

  • elephant grass
  • northern gamba grass
  • guinea grass
  • giant star grass

38. A footpath on a poultry farm contains

  • herbicides
  • antiseptics
  • antibiotics
  • disinfectants

39. Ectoparasites of cattle do not include

  • fleas and mites
  • ticks and mites
  • lice and termites
  • fleas and ticks

40. The following symptoms were observed in a bull: I. watery discharge from eyes and nostrils; II. sores in the mouth and nostrils; III. excessive saliva with offensive odour; IV. severe diarrhoea with blood stained faeces. What disease is the bull suffering from?

  • foot and mouth
  • brucellosis
  • tuberculosis
  • rinderpest

41. The following symptoms were observed in a bull: I. watery discharge from eyes and nostrils; II. sores in the mouth and nostrils; III. excessive saliva with offensive odour; IV. severe diarrhoea with blood stained faeces. Which of the following measures would best control the disease?

  • deworming animals
  • vaccinating animals
  • treating animals with antibiotics
  • dipping animals

42. Which of the following factors affect the supply of agricultural produce? I. improvement in technology II. increase in rainfall III. decrease in temperature IV. input cost

  • i and ii only
  • i and iii only
  • i, ii and iii only
  • i, ii, iii and iv

43. In agricultural production, farm gate price is mostly enjoyed by

  • middlemen
  • producers
  • commodity boards
  • cooperative societies

44. Dissemination of new ideas by agricultural extension workers can be effective if they

  • work with existing local organisations and leaders
  • supply farmers with needed input
  • give financial support to farmers
  • are politically active

45. Which of the following pairs are mass methods of extension?

  • telephone calls and informal contacts
  • letters and newspapers
  • home visits and demonstrations
  • radio and posters

46. Calculate the annual depreciation of a farm machinery with a total depreciation of D63,000 and a useful life of 5years

  • d6,300,00
  • d9,450,00
  • d12,600,00
  • d18,900,00

47. In hook and line fishing, the bait is fixed onto the

  • float
  • hook
  • line
  • pole

48. Water in a fish pond is made suitable for fish by

  • fertilization
  • liming
  • manuring
  • silting

49. Forest regulations are formulated in order to encourage

  • deforestation
  • afforestation
  • bush burning
  • taungya farming

50. Ornamental crops are used for the following purposes except

  • landscaping
  • interior decoration
  • as symbols of love
  • as fodder

ANSWERS

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