enwaecagricusc2014

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THEORY QUESTIONS

WAEC SYLLABUS

1. Commercial agriculture is characterized by

A. use of machines

B. small farm holdings

C. low capital investment

D. little research activity.

2. The most common method of acquiring land in West Africa is by

A. use of machines.

B. small farm holdings

C. low capital investment

D. little research activity.

3. The Agricultural sector in West Africa is plagued with poverty because

A. farmers belong to cooperative societies.

B. yields obtained per annum are relatively low.

C. farmers have access to credit facilities

D. the weather is highly predictable.

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

A. transport seeds from the metering device to the furrow opener.

B. controls the rate of placement of seeds in the soil.

C. cover seeds placed in the soil.

D. opens the soil for seed placement.

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

A. mill

B. decorticator

C. winnower

D. sheller.

ANSWERS

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

A. dibber

B. hoe

C. hand trowel

D. hand fork.

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

A. prevent rusting

B. sharpen the discs.

C. reduce friction

D. reduce the lifespan

8. Wind can be beneficial to crop production because it

A. aids weeds seeds dispersal

B. aids pollination of crops

C. causes lodging of crops.

D. causes rapid drying of wet soils.

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

A. basin irrigation

B. wild flooding

C. furrow irrigation

D. border strip.

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

A. rotational grazing

B. monoculture.

C. crop rotation

D. mixed farming.

ANSWERS

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

A. Improvement of soil structure

B. Soil compaction

C. Exposure of soil to erosion.

D. Depletion of soil nutrients.

12. The major factor affecting distribution of crops in West Africa is

A. climate

B. Soil

C. topography

D. disease.

13. Nutrient replenishment in soil can be enhanced by

A. crop removal

B. leaching

C. erosion.

D. crop rotation.

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

A. Ammonification.

B. Nitrification

C. Denitrification

D. Nitrogen fixation.

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

A. green manure

B. farmyard manure.

C. compost manure.

D. inorganic manure.

ANSWERS

16. A major disadvantage of monoculture is that

A. soil texture is destroyed.

B. soil microbes are destroyed.

C. diseases and pests build

D. farms cannot be mechanized.

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

A. Crop rotation and land rotation.

B. Shifting cultivation and land rotation.

C. land rotation and mixed farming.

D. crop rotation and monoculture.

18. Continuous soil tillage could lead to

A. increased infiltration of water.

B. reduced run-off.

C. breakdown of soil structure.

D. improved soil structure.

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

A. lime fertilizer.

B. nitrogenous fertilizer.

C. phosphate fertilizer.

D. potassium fertilizer

20. Theobroma cacao grows best in the

A. sudan savannah zone.

B. humid rain forest zone.

C. mangrove swamp forest zone.

D. northern guinea savannah zone.

ANSWERS

21. The following plants are forage grasses except

A. Pennisetum purpureum.

B. Panicum maximum.

C. Axonopus Compressus.

D. Calopogonium munoides.

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

A. can withstand adverse climatic conditions.

B. flower and bear fruit early.

C. develops broader leaves for photosynthesis.

D. are more disease resistant.

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

A. cocoa beans

B. coffee beans

C. cassava tubers

D. rice grains.

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

A. 100% heterozygous.

B. 70% heterozygous.

C. 50% heterozygous.

D. 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.

A. 50kg

B.75kg

C. 100kg

D. 125kg

ANSWERS

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

A. viruses.

B. bacteria.

C. fungi.

D. protozoa.

27. An example of fungal disease of stored grains is

A. mould.

B. streak.

C. mosaic.

D. damping off.

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

A. practicing crop rotation.

B. planting diseases against resistant varieties.

C. using insecticides.

D. fallowing of farmland.

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

A. wind.

B. water.

C. insect.

D. explosion.

30. Control of maize stem borer is most effective when

A. affected crops are uprooted and burnt.

B. rodenticides are applied.

C. nematicides are applied.

D. fertilizers are applied before planting.

ANSWERS

31. The average gestation period in rabbits is

A. 21 days

B. 26days.

C. 31days.

D. 36days.

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

A. reticulum omasum abomasum rumen

B. rumen omasum abomasum reticulum.

C. omasum abomasum rumen reticulum.

D. rumen reticulum omasum abomasum.

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

A. promote muscle development.

B. make parturition easier.

C. promote multiple births.

D. make the animal lose weight.

34. Pigs wallow in muddy pools of water primarily to

A. ensure adequate exercise

B. obtain forage materials.

C. dislodge ectoparasites from their body.

D. lower their body temperature.

35. Fowls are debeaked in order to

A. reduce feed intake.

B. make them grow faster.

C. reduce cannibalism.

D. check spread of disease.

ANSWERS

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

A. vitamin K

B. vitamin E

C. vitamin B

D. vitamin A.

37. The common name for Andropogon gayanus is

A. Elephant grass.

B. Northern gamba grass.

C. Guinea grass.

D. Giant star grass.

38. A footbath on a poultry farm contains

A. herbicides.

B. antiseptics.

C. antibiotics.

D. disinfectants.

39. Ectoparasites of cattle do not include

A. fleas and mites.

B. ticks and mites.

C. lice and termites.

D. fleas and ticks.

Use the information below to answer questions 40 and 41.

The following symptoms were observed in a bull: I. watery discharge from the eyes and nostrils II. Sores in the mouth and nostrils III. Excessive saliva with offensive odour IV. Severe diarrhea with blood stained faeces.

40. What disease is the bull suffering from?

A. Foot and mouth.

B. Brucellosis.

C. Tuberculosis.

D. Rinderpest.

ANSWERS

41. Which of the following measures would best control the disease?

A. Deworming animals

B. Vaccinating animals.

C. Treating animals with antibiotics.

D. 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.

A I and II only.

B.I and III only.

C. I, II, and III only.

D. I, II, III, and IV.

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

A. middlemen.

B. producers.

C. commodity boards.

D. cooperative societies.

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

A. work with existing local organization and leaders.

B. supply farmers with needed inputs.