enwaecagricusc2008

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THEORY QUESTIONS

WAEC SYLLABUS

1. Which of the following benefits of agriculture is of least importance to the peasant farmer?

A. Materials for shelter.

B. Employment

C. Foreign exchange

D. Income.

2. Farmers who plant improved maize would harvest

A. pest- infested maize grains

B. a high yield of maize.

C. plants with long stalk

D. maize cobs with scattered grains

3. Which of the following land tenure systems allows the owner greatest freedom to dispose of the land as he wishes?

A. Communal

B. Free- hold C. Lease- hold

D. Share- cropping

4. Which of the following is not a government agriculture programme?

A. Operation Feed The Nation

B. Agricultural Development Projects

C. Farm Settlement Schemes

D. West African Rice Development Agency

5. The practice of planting one type of annual crop each season is referred to as

A. monoculture

B. continuous cropping

C. mono- cropping

D farmstead construction

ANSWERS

6. The most important use of land for agricultural production is

A. grazing paddocks

B. botanical gardens

C. game reserves

D. farm stead construction

7. Which of the following biotic factors are usually used to control cassava mealy bugs?

A. Parasites

B. Predators

C. Pests

D. Pathogens

8. The following are types of sedimentary rocks except

A. granite

B. limestone

C.sandstone

D. dolomite

9. A reddish coloured sand indicates the presence of

A. copper

B. sodium

C. iron

D. manganese

10. The three most important factors that influence rock weathering are

A. colour, particle size and hardness of rock

B. particle size, hardness and degree of cementation

C. hardness, degree of cementation and colour

D. particle size, temperature and colour

ANSWERS

11. Which of the following statements is not true about waterlogged soils?

A. Such soils are heavily leached

B. denitrifying bacteria are most active in such soils than nitrifying bacteria

C. Nitrosomonas yield best in such soils

D. Soil temperature is usually low

12. Which of the following crops should be planted on a piece of land that has been repeatedly cropped with maize?

A. Guinea corn

B. Millet

C. Rice

D. Cowpea

13. Sources of nitrogen to the soil include the following except

A. lightening

B. urea

C. blue0green algae

D. residues of burning activities

14. Which of the following statements about bush burning is false?

A. It releases mineral nutrients bound in soil tissues

B. IT encourages the growth of fresh tissues

C. The heat generated destroys pests

D. The heat generated increases the population of soil organisms

15. A farmer applied NPK 15:11:8 at planting. What is the percentage of potassium in the fertilizer?

A. 23.53%

B.32.35%

C.33.33%

D.44.12%

ANSWERS

16. The following equipment can be used for irrigation except

A. bucket

B. watering can

C. knapsack sprayer

D. siphon tube

17. Excessive drainage of soil water can be checked by the addition of adequate quantities of

A. N.P.K 15-15-15

B. sulphate of ammonia

C. single superphosphate

D. compost manure

18. Considering all costs, the cheapest source of energy for domestic use is

A. electricity

B. sunlight

C. biogas

D. water

19. The instrument used for pulverizing the soil is the

A. planter

B. ridger

C. harrow

D. plough

20. An incubator is important in supplying

A. heat for day-old chicks

B. heat for embryo development

C. light for candling eggs

D. feed to chicks

ANSWERS

21. A farm surveying equipment made of steel and used for measuring short distances is called

A. prismatic compass

B. measuring tape

C. gunter’s chain

D. theodlite

22. Which of the following statements about farmstead planning is false?

A. Administrative blocks should not be located close to the farmstead

B. Waste disposal unit should be located far away from the main farm area

C. All buildings should be well ventilated with good lightings

D. Animal pens should not be located too close to the worker’s house

23. The term supplying in crop production means

A. pruning excess branches of crops

B. spacing out crops during planting

C. replacing ungerminated seeds on seed beds

D. adding enough fertilizer on the crops

24. During photosynthesis, green plants convert carbon dioxide to

A. chlorophyll

B. carbohydrate

C. protein

D. carbonic acid

25. Parboiling in the processing of rice

A. improves its digestibility

B. increases grain mass

C. reduces the percentage of breakage

D. facilitates the polishing of rice

ANSWERS

26. The main reason for removing the barks of cassava tubers before processing the tuber is to

A. reduce the water content

B. improve the protein content of products

C. improve the shelf life of products

D. reduce the cyanide content of products

27. Curing is carried out in the processing of

A. cassava

B. tobacco

C. okra

D. tomato

28. Tomato plants are staked for the following reasons except to

A. produce clean fruits

B. reduce pest damage to fruits

C. increase the yield

D. improve the taste

29. A vegetatively propagated citrus plant will produce fruits earlier than one established from seeds because

A. it would not suffer from gummosis disease

B. insect pest do not attack it

C. it is more advanced at the time of establishment

D. the flowers are wind pollinated

30. Swollen shoot disease of cocoa is caused by

A. virus

B. fungus

C. bacteria

D. nematode

ANSWERS

31. Groundnut grows best on a

A. well-drained, light sandy-loam soil

B. well-drained, clayey friable soil

C. swampy, sandy-clay soil

D. well- drained, clayey-loam soil

32. Which of the following characteristics is not true of a good pasture crop?

A. High palatability

B. High nutritive value

C. Resistance to trampling

D. Poor digestibility

33. The benefits of establishing forests do not include

A. derivation of medicine

B. provision of food

C. improvement of micro-climate

D. shading of crops

34. Floriculture is a subdivision of horticulture which deals with the cultivation of

A. fruit crops

B. vegetables

C. ornamental plants

D. spices

35. Which of the following insect pests causes defoliation in crops?

A. Mirid

B. Grasshopper

C. Weevil

D. Aphid

ANSWERS

36. Which of the following pesticides effectively control maize stem borers?

A. Systemic insectides

B. Contact poisons

C. Nematicides

D. Fumigants

37. Which of the following combinations of practices best controls groundnut rosette disease?

A. Late planting and spraying of insecticide

B. Early planting and spraying of nematicide

C. Late planting and spraying of fungicide

D. Early planting and spraying of insecticide

38. Determine the number of bottles of an herbicide required to spray 25 hectares of farmland, if one bottle is needed to prepare 100 litres and the diluted product is applied at a rate of 20 litres per hectare.

A. 2 bottles

B. 5 bottles

C. 8 bottles

D. 11 bottles

39. The milk secreting organ in cattle is the

A. dewlap

B. udder

C. comb

D. muzzle

40. A developing embryo derives its nutrition from the mother

A. through the blood vessels located in the placenta

B. by sucking the mammary glands

C. by direct diffusion through the blood vessels in the liver

D. through the blood vessels located in the intestine of the mother

ANSWERS

41. Birds store their food in the

A. crop

B. gizzard

C. proventriculus

D. cloaca

42. The following are examples of natural mating methods except

A. pen mating

B. flock mating

C. hand mating

D. block mating

43. The milk collection vessel of the mammary gland is the

A. alveolus

B. gland cistern

C. teat

D. streak canal

44. Fertile eggs will be produced by hen breeders if the

A. laying units are well illuminated

B. cocks are always kept with the hens

C. hens are not allowed to brood

D. eggs collected are kept at the correct temperature

45. The rabbit is able to utilize forage because

A. it has an enlarged caecum that digests fibre

B. the small intestine is rich in microbes

C. the mouth has large molars for grinding

D. the length of the gut is relatively short

ANSWERS

46. If feed efficiency for egg production is defined as feed consumed per 10 eggs, what will be the feed efficiency for a layer that laid 230 eggs and consumed 26kg feed?

A. 0.88

B.1.13

C. 1.76

D. 2.23

47. When birds are fed on a ration deficient in riboflavin, which of the following symptoms will they show?

A. Night- blindness

B. Cataract

C. Curled- toe paralysis

D. Scurvy

48. Livestock are said to feed on the range when they eat

A. fresh herbage at the milking parlour

B. fresh herbage directly from the pasture

C. harvested herbage in a stall

D. preserved herbage in the form of silage

49. Which of the following practices is not a method of improving rangeland?

A. Rotational grazing

B. Reseeding of depleted forage species

C. Removal of weeds

D. Use of inorganic fertilizers

50. Liverfluke infestation causes disturbance in lipid digestion because it

A. blocks the passage of fat to intestine

B. blocks the bile duct and reduces secretion of bile

C. destroys the lipase enzyme

ANSWERS

51. A farmer noticed that one of his cows has high fever, blood- stained diarrhea and often grinds its teeth. This shows that the cow is infected by

A. rinderpest

B. anthrax

C. brucellosis

D. aspergillosis

52. Temperature is an important factor in fish ponds because it

A. affects the metabolic processes in fish

B. determines the sex of fishes

C. encourages the growth of phytoplanktons

D. affects the type of species of fish

53. Na illegal method of harvesting fish is by the use of

A. drag net

B. potassium cyanide

C. hook and line

D. calcium carbonate

54. How can the offspring of a bull continue to be produced long after its death? By

A. using the preserved semen for artificial insemination

B. collecting the semen of the offspring fro use in artificial insemination

C. crossing the male and female offspring

D. preserving the body of the dead animal

55. Which of the following factors of production has profit as its reward?

A. Land

B. Labour

C. Capital

D. Management

ANSWERS

56. A farm business makes profit when

A. total revenue equals total cost

B. total cost exceeds total revenue

C. total cost exceeds total revenue

D. average cost equals total revenue

57. Agricultural business is difficult to insure in West Africa mainly because

A. agricultural production is not very profitable

B. agricultural production is highly risky

C. many farmers are very poor

D. the premium is very high

58. A tractor with an expected life of 10 years was bought for Le 15.0m at the end of which it was to be sold for Le 1.0m. its calculated depreciation is

A. Le 1.4m

B. Le 1.5m

C. Le 1.6m

D. Le 1.7m

59. The aims and objectives of agricultural extension education do not include

A. educating farmers on the use of new tools

B. educating farmers on government’s annual budgets

C. encouraging farmers to obtain loans for farming

D. encouraging farmers to use meteorological information in farming

60. The process which a famer goes through form the time he hears about a new idea till he finally accepts it, is referred to as

A. evolution

B. revolution