enwaecagricusc2012

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THEORY QUESTIONS

WAEC SYLLABUS

1. Agricultural production in West Africa can be improved by the following practices except the

A. use of modern farm implements by farmers.

B. legislation of communal land holding system.

C. application of proven agricultural research findings.

D.

2. A limitation to the practice of shifting cultivation in modern day agriculture is

A. prevalence of crop diseases.

B. farm mechanization.

C. population pressure.

D. nomadic agriculture.

3. Government finances agriculture through the following means except

A. reduction of tariffs on agricultural inputs.

B. granting of subsidies to farmers.

C. establishment of agricultural colleges.

D. establishment of credit sources.

4. The following area the factors that affect agricultural development in West Africa except

A. transportation.

B .rainfall.

C. land tenure.

D. pests and diseases.

5. Termites are useful in agriculture because they

A. help control plant population.

B. increase soil moisture.

C. improves soil aeration.

D. regulates soil temperature.

ANSWERS

6. A fresh soil sample of mass 180g had a mass of 120g after oven-drying. Determine the percentage water content of the soil.

A. 40.0%

B. 38.8%.

C.35.3%.

D. 33.3%.

7. The earthworm is important to the farmer because

A. improves soil texture.

B. destroys soil pathogens.

C. checks soil erosion.

D. improves soil structure.

8. The soil water that is readily available for plant roots is called

A. capillary water.

B. gravitational water.

C. hygroscopic water.

D. superfluous water.

9. Farmers practice mixed farming because they can

A. easily secure loans to expand their farms.

B. specializes in either the growing of crops or rearing of animals.

C. uses the manure from the animals to fertilize their crops.

D. easily controls pests and diseases on their farm.

Three soil samples labeled X, Y and Z were put separately in three funnels plugged with cotton wool and placed with graduated cylinders. An equal volume of water was poured on each soil sample. It was later observed that the amount of water that passed through soil sample X was more than that of Y and that of Y was more than that of Z.

Use this information to answer question 10.

10. Which of the following statements is a correct deduction from the information?

A. X is clay, Y is sand and Z is loam.

B. X is sand, Y is clay and Z is loam.

C. X is loam, Y is sand and Z is clay.

D. X is sand, Y is loam and Z is clay.

Use the diagram below to answer questions 11 and 12.

ANSWERS

11. The diagram represents the

A. nitrogen cycle.

B. Kreb cycle.

C. water cycle.

D. Carbon cycle.

12. The part of the diagram labeled I is

A. carbon dioxide.

B. photosynthesis.

C. plant.

D. nitrification.

13. Which of the following factors should be considered in selecting cover crops? I. be easy to propagate. II. Compete with the main crops. III. Have roots capable of binding soils. IV. Be slow growing.

A. I and II only.

B. II and III only.

C. I and III only.

D. III and IV only.

14. Which of the following terms is not associated with surface irrigation?

A. tile.

B. Basin.

C. Dyke.

D. Furrow.

15. Loss of nitrogen from the soil through the removal of oxygen from nitrates by bacteria is known as

A. ammonification.

B. dehydration.

C. denitrification.

D. nitrification.

ANSWERS

16. Which of the following statements are advantages of mulching? It I. controls weeds. II. Conserves soil moisture. III. Increases soil temperature. IV. Reduces soil pH.

A. I and II only.

B. I and III only.

C. II and IV only.

D. III and IV only.

17. Determine the weight of potassium in a 50kg NPK (20:20:20) bag of fertilizer.

A. 5.0kg.

B. 7.0kg.

C. 10.0kg.

D. 20.0kg.

18. The farm power which is most adaptable to farm operations in West Africa is

A. animal power.

B. wind power.

C. human power.

D. solar power.

The diagram below represents a chain measurement drawing of a school farmland surveyed by students who encountered an obstruction at point C.

ANSWERS

21. The method used to calculate the distance CE is called

A. chain method.

B. right-angled method.

C. similar triangle method.

D. double perpendicular method.

22. What form of obstruction was encountered by the students?

A. Tree.

B. River.

C. Hill.

D. Pond.

23. If grains are not properly dried before storage, they are likely to

A. lose viability at a faster rate.

B. remain dormant for a long time.

C. synthesize carbohydrates during storage.

D. germinate faster when planted in the field.

24. Which of the following combinations of activities gives the correct sequence of nursing seeds? I. Watering of sown seeds. II. Making drills with a dibber. III. Covering seeds with palm frond. IV. Sowing seeds in drills.

A.II, IV, III and I.

B. III, II, I and IV.

C. III, IV, II and I.

D. II, III, IV and I.

25. If the recommended spacing for a tree crop is 2.5m by 4.0m, how many seedlings are required to plant a 2-hectare farmland?

A. 8,000 seedlings.

B. 3,000 seedlings.

C. 2,000 seedlings.

D. 1,000 seedlings.

ANSWERS

26. Which of the following processes are associated with rubber production? I. Coagulation. II. Fermentation. III. Tapping.

A. I and II only.

B. I and III only.

C. II and III only.

D. I, II and III.

27. The following crops require staking except

A. tomato.

B. yam.

C. pumpkin.

D. guinea corn.

28. Which of the following statements is/are correct? Yams stored in barns should be inspected at least once a week to I. remove rotten tubers. II. Remove sprouts from the tubers. III. Prevent mouldiness in the tubers.

A. I only.

B. II only.

C. III only.

D. I, II, and III.

29. The frequency of weed control on a tomato farm does not depend on

A. rainfall.

B. soil fertility.

C. nearness to homestead

D. planting distance of crops.

30. Citrus is usually propagated by

A. budding.

B. layering.

C. Use of stem cuttings.

D. use of bulbs.

ANSWERS

31. The botanical name of groundnut is

A. Vigna unguiculata.

B. Arachis hypogaea.

C. Phaseolus vulgaris.

D. Glycine max.

32. Ornamental plants reduce noise pollution in the environment by

A. scattering sound energy.

B. reflecting sound waves.

C. dispersing sound waves.

D. absorbing sound energy.

33. Which of the following statements about the effects of diseases on crops are true? Reduction in I. quality of produce. II. Photosynthetic ability. III. Cost of production. IV. Yield f the produce.

A. I and II only. II

B. I and III only.

C. I, II, and III only.

D. I, II and IV only.

34. Which of the following insect pests possess biting and chewing mouth parts?

A. Grasshopper.

B. Weevil.

C. Aphid.

D. Cotton stainer.

35. Striga spp. is a parasitic weed of

A. Cotton.

B. Groundnut.

C. Orange.

D. sorghum

ANSWERS

36. The first activity to undertake before establishing a plantation is to

A. survey the land.

B. clear the land.

C. prepare the seed beds.

D. raise the seedlings.

37. Fruits should ebb harvested at the appropriate time in order to

A. prevent them from bruising.

B. minimize their sugar content.

C. reap increased fruiting.

D. ensure good quality produce.

38. Which of the following crops are useful to soap making industry? I. Kolanut. II. Coconut. III. Sheanut.

A. I and II only.

B. I and III only.

C. II and III only.

D. I, II and III

39. An advantage of rotational grazing is that

A. less labour is required.

B. there is greater potential for extending the grazing season.

C. reap increased fruiting.

D. ensure good quality produce.

40. A sheep gained 20kg of weight after consuming 60kg of feed. Determine the feed conversion ratio.

A. 1:2

B. 2:3

C. 3:1

D. 5:4

ANSWERS

41. A disease which affects poultry only is

A. coccidiosis.

B. Newcastle.

C. pox.

D. helminthiasis.

42. Which of the following factors have negative influence on egg weight? I. High environmental temperature. II. Poor lightening. III. Comb size.

A. I and II only.

B. I and III only.

C. II and III only.

D. I, II and III.

43. Fish ponds in arid areas should be deeper than those in rain forests in order to

A. ensure rapid growth of fish in arid areas.

B. prevent loss of fish through extreme of temperatures.

C. provide sufficient nutrients for the survival of fish.

D. prevent exposure of fish to direct effect of the sun.

44. Is sheep production, litter is put on the floor mainly to

A. reduce the build-up of ecto- parasites.

B. facilitate cleaning of the house.

C. reduce the incidence of pneumonia in lambs.

D. help maintain suitable humidity in the house.

45. Determine the number of pigs that can be housed in a pigsty measuring 5.0m by 4.0m, if the floor space for a pig is 2.0m2.

A. 10.

B.11.

C. 20.

D. 40.

ANSWERS

46. The type of weed control involved when tilapia feeds on aquatic weeds is

A. biological.

B. chemical.

C. cultural.

D. mechanical.

47. Which of the following statements about cross breeding in farm animals is false?

A. It is a method used to produce new breeds of farm animals.

B. the individuals used have all characters in common.

C. It is a practice of improving poultry production.

D. It can be used to introduce new genes in farm animals.

48. On which of the following criteria is pedigree selection in animal improvement based?

A. Performance of the ancestors.

B. Characteristics of the sire.

C. Performance of the offspring.

D. Characteristics of the dam.

Use the animal body parts listed below to answer questions 49, 50 and 51.

I. Cowper’s gland. II. Jejunum. III. Urethra.

49. Which of the animal body parts listed above related to the reproductive system?

A. I and II only.

B. I and III only.

C. II and III only.

D. I, II and III.

50. Which of the following animal body parts listed above are found in female animals?

A. I and II only.

B. I and III only.

C. II and III only.

D. I, II and III.

ANSWERS

51. Which of the following animal body parts listed above secrets substances?

A. I and II only.

B. I and III only.

C. II and III only.

D. I, II and III.

52. Which of the following symptoms is typical of louse infestation in livestock?

A. itching of the body.

B. abdominal pain.

C. profuse salivation.

D. oozing out of blood.

53. Which of the following statements about herbivores are true? I. Non-ruminant herbivores have long ceaca. II. Non- ruminant herbivores have complex stomach. III. Ruminant herbivores chew the cord.

A. I and II only.

B. I and III only.

C. II and III only.

D. I, II and III only.

54. If an injured goat bleeds without the blood clotting, it is likely that the goat is deficient in

A. vitamin D.

B. vitamin K.

C. vitamin E.

D. vitamin C.

55. Determine the cost price of a farm equipment that has a salvage value of #500,000.00, a useful life of 10 years and an annual depreciation of #400,000.00.

A. #500,000.00.

B. #900,000.00.

C. #4,500,000.00

D. #5,500,000.00.

ANSWERS

56. An example of long term liability of a farmer is

A. capital.

B. interest.

C. salary.

D. taxes

57. A farm business makes profit when

A. total revenue equals total cost.

B. total cost exceeds total revenue.

C. total revenue exceeds total cost.

D. total revenue equals average cost.

58. Marginal cost of production is defined as

A. increase in fixed cost that results from increasing production by one unit.

B. product of average variable cost and the number of units produced.

C. average physical product multiplied by the variable cost.

D. increase in total cost as output is increased by one unit.

59. The price of a fixed asset at the end of its useful life is called

A. salvage value.

B. depreciation value.

C. annual depreciation.

D. appreciation value.

60. Which of the following criteria is used in selecting agricultural extension teaching methods? I. Time available for the programme. II. The number of farmers involved. III. The agricultural needs of the farmers.

A. I and II only.

B. I and III only.

C. II and III only.

D. I, II and III.