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THEORY QUESTIONS

WAEC SYLLABUS

1. Agriculture contributes to the economy of West African countries through the following means except

A. reduction of poverty through job creation.

B. supply of armament for territorial defense.

C. provision of foreign exchange.

D. supply of raw materials to industries.

2. Which of the following statements about agricultural development are true? I. increased processing of produce. II. Increased food production. III. High productivity. IV. Increased agricultural labour force.

A. I, II and III only.

B. I, II and IV only.

C. I, III and IV only.

D. II, III and IV only.

3. Under the communal land tenure system, farmers find it difficult to secure loans because

A. land holdings are small and fragmented.

B. they are poor.

C. land holdings cannot be used as security.

D. they are mostly illiterate.

4. Government plays important roles in the development of agriculture through the following means except

A. provision of subsidies.

B. training of farmer’s children.

C. establishment of agricultural development programmes.

D. establishment of farm settlements.

5. Which of the following factors does not influence the distribution of cattle in West Africa?

A. Pasture.

B. Light.

C. Diseases.

D. Rainfall.

ANSWERS

6. Poaching is prohibited in games reserve to

A. reduce wildlife population.

B. conserves wildlife.

C. starves hunters.

D. protects hunters from wild animals.

7. Soil water that is available for root absorption at filed capacity is

A. capillary water.

B. hygroscopic water.

C. gravitational water.

D. superfluous water.

8. Which of the following factors are causes of deforestation in West Africa? I. Expansion of cultivated land. II. High population growth rate. III. conservation of wild life in games reserve. Iv. Urban growth.

A. I, II and III only.

B. II, III and IV only.

C. I, II and IV only.

D. I, II, III and IV.

9. In which layer of the soil profile do most biological activities occur?

A. D-horizon.

B. C-horizon.

C. B-horizon.

D. A-horizon.

10. Which of the following statements is correct about micro- nutrients? They

A. promote formation of only root nodules.

B. is required by plants in very small quantities.

C. is fixed into the soil through microbial activity.

D. increase crop tolerance to pest attack.

ANSWERS

11. Which of the following properties of soil determine sits water holding capacity? I. Texture. II. pH III. Colour. IV. Structure.

A. I and II only.

B. I and IV only.

C. II and III only.

D. III and IV only.

12. Which of the following statements about soil organisms is false?

A. Soil pH will affect the population of soil organisms.

B. population of soil living organisms is increased with increase in soil organic matter.

C. soil with good texture and structure cannot harbor soil microbes.

D. soil temperature affects the activities of soil organisms.

13. A detrimental effect of bush burning is that it

A. destroys soil organic matter.

B. destroys weed seeds.

C. sterilizes the soil.

D. adds potash to the soil.

14. The following crops will enrich the soil with nitrates except

A. calopogonium

B. pueraria.

C. centrosema.

D. axonopus.

15. Which of the following groups of rocks is formed as a result of volcanic eruption?

A. Limestone, basalt and shale.

B. Basalt, granite and pumice.

C. Sandstone, granite and quartzite.

D. Marble, gneiss and shale.

ANSWERS

16. The following fertilizers can be used to neutralize soil acidity except

A. wood ash

B. ammonium nitrate.

C. Limestone.

D. calcium.

17. The following are advantages of sub surface irrigation except that

A. it is suitable for soil with low water holding capacity.

B. it can be used only for specific types of crops.

C. the rate of evaporation is greatly reduced.

D. it reduces the incidence of pests.

18. Which of the following statements is a disadvantage of human power? It

A. controls other sources of farm power.

B. brings about least damage.

C. is easily available and controlled.

D. has low output.

19. The instrument which enables a surveyor to find the direction of a base line is

A. abney level.

B. ranging pole.

C. plumb pole.

D. magnetic compass.

20. Limitations of farm mechanization in West Africa do not include

A. land fragmentation.

B. high capital investment

C. availability of spare parts.

D. high level technical know-how.

ANSWERS

21. The use of animal traction is limited in the forest zones of West Africa because of the

A. topography of the forest land.

B. presence of tsetse flies.

C. high amount of rainfall.

D. culture of the people.

22. The correct sequence for the use of coupled implements for land preparation is

A. plough, harrow and ridger.

B. harrow ridge and plough.

C. plough, ridger and harrow.

D. harrow, plough, ridger and harrow.

23. Corms, rhizomes and tubers are examples of

A. underground stems

B. underground roots.

C. modified leaves.

D. aerial stems.

24. Tomatoes are staked in order to

A. accelerate their growth.

B. induce flowering.

C. accelerates fruit ripening.

D. prevents rotting of fruits.

25. In crop production, ginger is propagated by

A. seed.

B bulb.

C. rhizome.

D. corm.

ANSWERS

26. A regulatory control of disease in crop production is

A. rouging.

B. quarantine.

C. crop rotation.

D. soil tillage.

27. Yellow colouration of the leaves of a growing maize plant may be due to deficiency in

A. potassium.

B. phosphorus.

C. zinc.

D. nitrogen.

28. Which of the following insects transmits swollen shoot disease of cocoa?

A. Stem borer.

B. Mealy bug.

C. White fly.

D. Scale insect.

29. The main objective of establishing forest in the arid region is to

A. check desert encroachment

B. provides firewood for cooking.

C. provides bush meat.

D. improves the beauty of the environment.

30. The forest management system which involves the planting of both food crops and forest trees on the same piece of land at the same time is known as

A. selective exploitation.

B. taungya.

C. regeneration.

D. afforestation.

ANSWERS

31. Pineapple is widely propagated using

A. seeds.

B. suckers.

C. slips.

D. cuttings.

32. Which of the following crops has a fibrous root system?

A. Cotton.

B. Coffee.

C. Cow pea.

D. Sugarcane.

33. The process of grafting in crop production involves

A. the fusion of gametes of two crops.

B. inducing roots from stems.

C. the transfer of a bud from one crop to another.

D. the joining of two parts from related crops.

34. Crop rotation decreases the incidence of pest by

A. breaking life cycle of pests.

B. attracting pest predators.

C. sterilizing the soil.

D. maintaining soil fertility.

35. If the recommended spacing of a tree crop is 2.5 cm by 4.0 cm, determine the number of seedlings required to plant a 2- hectare farmland.

A. 1,000.

B. 2,000.

C. 10,000.

D. 20,000.

ANSWERS

36. Close to the time of harvesting of cotton, sunshine is needed to ensure the production of balls that are

A. big.

B. light.

C. not moldy.

D. not open.

If T represents the gene for tallness while t represents dwarfness, use the information to answer questions 37 and 38.

37. When a tall (TT) crop is crossed with a dwarf (tt) crop, the resultant crops will be

A. 100% dwarf.

B. 100% tall.

C. 50% tall and 50% dwarf.

D. 75% tall and 25% dwarf.

38. The genotypic ratios of the second filial generation will be

A. 3:1.

B 1:2:1.

C. 2:2.

D. 4:0.

39. The correct sequence of seed utilization in farm animals is

A. digestion-ingestion- absorption-assimilation.

B. ingestion- digestion- assimilation- absorption.

C. ingestion- digestion- absorption- assimilation.

D. digestion- assimilation- ingestion- absorption.

40. Sexual maturity in farm animals is not influenced by their

A. breed.

B. sex.

C. nutrition.

D. weaning age.

ANSWERS

41. A sow that is producing milk after farrowing should be given

A. oxytocin.

B. antibiotic.

C. anthelmintic drug.

D. sulphaquinoxaline.

42. In preparing for parturition of a sow, warmth should be given to

A. promote growth of hair of the young.

B. makes the young suckle colostrums.

C. prevents anaemia in the young.

D. prevents chilling of the young.

43. The device which helps to stabilize heat in an incubator is the

A. thermometer.

B. hygrometer.

C. barometer.

D. thermostat.

44. A mature wether will require relatively low amounts of protein because it

A. has fast growth rate.

B. cannot digest much protein.

C. makes very efficient use of little protein.

D. requires just enough for maintenance purposes.

45. In animal production, newly-born rabbits are called

A. bunnies.

B. kids.

C. poults.

D. lambs.

ANSWERS

46. The weight of a sheep is increased from 25kg to 45kg in two months. If the total consumption during the period was 60kg, determine the feed conversion ratio.

A. 1:1.

B.1:2.

C. 3:1.

D. 4:1.

The data for feed consumption and weight gain for four animals labeled P, Q, R, and S are shown below:

P-50kg feed consumed and 20kg weight gained.

Q- 90 kg feed consumed and 30 kg weight gained.

R- 100kg feed consumed and 25kg weight gained.

S-150kg feed consumed and 30kg weight gained.

Use the data to answer questions 47 and 48.

47. Which animal is the most efficient food converter?

A. P.

B. Q.

C. R.

D. S.

48. The feed conversion efficiency of the poorest weight gainer is

A. 0.40.

B.0.33.

C. 0.25.

D. 0.20.

49. Which of the following diseases commonly occur during brooding? I. Yolk sac infection. II. Coccidiosis. III. Fowl pox. IV. Pullorum.

A. I, II and III only.

B. I, II and IV only.

C. I, III and IV only.

D. I, II, III and IV.

50. Piglet anaemia can be controlled by using

A. sulphur drugs.

B. iron drugs.

C. anthelmintics.

D. antibiotics.

ANSWERS

56. Calculate the annual depreciation of a farm house using the following data? (i) The initial cost of the farm house #100,000.00 (ii) Expected life span of farm house 100years. (iii) Estimated salvage value of farm house #25,000.00

A. #750.00.

B. #725.00.

C. #720.00.

D. #700.00.

57. The most important factor that determines the demand for cowpea by consumers is the

A. income for consumers.

B. price of cowpea.

C. supply of cowpea.

D. taste of consumers.

58. Land in agricultural business is a durable asset because

A. its value is realized over several years.

B. it is more valuable than labour.

C. it can be expanded by reclamation.

D. it is a free gift of nature.

59. A cowpea farmer obtained a loan of D50, 000.00 from his cooperative society at an interest rate of 5%. Calculate the interest to be paid on the borrowed capital after one year.

A. D2, 500.00.

B. D5, 000.00.

C. D7, 500.00.

D. D10, 000.00.

60. The main function of an agricultural extension agent is to

A. assist farmers to export their produce.

B. provides managerial services to farmers.

C. educates farmers on innovations in agriculture.

D. act as a link between farmers and middlemen.

ANSWERS