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AGRICULTURAL SCIENCE (Objective Questions And Answers)


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THEORY QUESTIONS
WAEC SYLLABUS

WASSCE 2016

Objectives



1. Which of the following suggestions would solve transportation problems associated with agriculture?

A. Establishment of tractor hiring units

B. Efficient railway system

C. Establishment of car hire units

D. Provision of extension services


2. Which of the following statements is not correct about agriculture in most West African countries? It provides

A. employment.

B. fuel.

C. food.

D. income.


3. The document given to a farmer on acquiring a piece of land from government is called

A. certificate of purchase.

B. receipt of ownership.

C. certificate of occupancy

D- receipt of lease


The diagram below shows some parts of a plough. Study it and answer questions 4. 5, 6 and 7.





4. The part labelled I in the diagram is the

A. hitch

B. handle

C. plough share

D. mouldboard


5. The part labelled II is the

A. wheel

B. plough share

C. handle

D. mouldboard


ANSWERS

6. Which of the following functions is not associated with the part labelled I?

A. Inverting of furrow slice

B. Cutting through soil

C. Pulverizing of the slice in some ploughs

D. Enabling the plough to roll over obstacles


7. The function of the part labelled II is that it

A. makes vertical cuts.

B. makes horizontal cuts

C. inverts the furrow slice

D. removes mud that clings to the disc


8. The surveying instrument used for measuring horizontal and vertical angles is called

A. theodolite

B. Gunters chain

C. offset staff

D. arrow.


9. Crop rotation is often used in maintaining soil fertility because

A. all crops grown, add nutrient to the soil.

B. some of the crops fix nitrogen in the soil.

C. crops grown are ploughed into the soil

D. the crops are rotated on different farmlands


10. Land is said to be a fixed asset in Agriculture. This means that

A. its features and topography are fixed

B. soil nutrients and its vegetative cover can be replaced

C. its size remains fixed over time

D. its micro organic composition is constant overtime


ANSWERS

11. The most limiting factor affecting land availability for agriculture in urban settlements is

A. soil type

B. topography

C. climate

D. population pressure.


12. Rhizobium supplies nitrogen to leguminous plants by

A. incorporating urea into their bodies.

B. fixing atmospheric nitrogen into the soil

C. decomposing plant and animal remains

D. decreasing the pH value of the soil


13. An example of igneous rock is

A. granite

B. limestone

C. coal

D. sandstone


14. In chemical weathering of rocks, the equation Fe2 0} + 3H20 -> Fe,03. 3H20 represents

A. caroonation

B. hydration.

C. solution

D. oxidation


15. Which of the following statements is a disadvantage of decaying organic matter in soils?

A. Bacteria and fungal growth is enhanced

B. Minerals in organic matter are released into the soil

C. Physical condition of soil is enhanced

D. Water-holding capacity of soil is improved


ANSWERS

16. Lost soil nutrients can be replenished by the following methods except

A. organic manuring

B. fertilizer application

C. continuous grazing

D. cover cropping.


17. In the carbon cycle, carbondioxide in the-air may be replenished by

A. respiration

B. transpiration

C. lightning

D. denitrification


18. Irrigation can be described as the

A. reduction of soil water

B. spraying of minerals on plants

C. application of dissolved fertilizers to the soil

D. application of water to the soil.


19. Which of the following conditions is a characteristic of a poorly drained soil?

A. Presence of a large number of termites

B. Presence of high amount of humus

C. Decrease in the activities of microorganisms

D. High soil fertility and productivity


20. The process of removing excess maize seedlings from a stand is known as

A. pruning

B. supplying

C. thinning

D. weeding


Study the diagram below and answer questions 2 I and 22.




ANSWERS

21. The farm tool associated with the diagram above is the.

A. knife.

B. secateurs.

C. shears.

D. cutlass.


22. The crop associate with the diagram above is

A. Theobroma cacao

B. Zingiber officinale

C. Hevea brasiliensis

D. Gossypium hirsutum


23. Which of the following crops requires shade at the early stage of its growth?

A. Plantain

B. Banana

C. Cocoa

D. Sugarcane


24. Which of the following plants is not a leguminous forage1?

A. Centrosema pubescens

B. Panicum maximum

C. Stylo gracilis

D. Calopogonium mucunoides


25. The process of crossing two pure lines of plants of the same species is called

A. selection.

B. genotype improvement

C. hybridization

D. inbreeding.


ANSWERS

26. Pure lines of crops are produced through continuous

A. selection

B. hybridization

C. crossbreeding ,

D. inbreeding


27. Quarantine regulations are established so as to

A. allow the importation of diseased plant and animal materials

B. prevent the introduction of foreign diseases into a country.

C. assist farmers to grow foreign crops.

D. facilitate the rapid, spread of foreign diseases.


28. The most effective method of controlling viral diseases in crops is by

A. spraying with Bordeaux mixture

B. removing and burning affected crops

C. practising crop rotation

D. planting at recommended spacing.


29. Which of the following insects transmits swollen shoot virus ofCocoa?

A. Stem borer

B. Mealybug

C. White fly

D. Capsid


30. The use of parasites and predators to control weeds is referred to as

A. biological control

B. chemical control

C. cultural control

D. mechanical control


ANSWERS

31. Forest resources can be managed by the following measures except

A. taungya farming

B. selective exploitation

C. promoting deforestation

D. preventing bush burning.


32. The continuous removal of forest trees without replacement is known as

A. afforestation

B. taungya farming

C. deforestation

D. selective exploitation


33. A farm aniittal which possesses a pair of caeca is

A. pig

B. fowl

C. sheep

D. cattle


34. Oestrogen in female animals is not responsible for

A. development of secondary sexual characteristics

B. onset of heat period

C. milk let-down after parturition

D. development of udder


35. A beef cow gained 75 kg over a period of two months and two-days. What is its average weight gain?

A. 0.83 kg

B. 1.21 kg

C. 1.28 kg

D. 2.25 kg


ANSWERS

36. A disadvantage of natural incubation is that

A. the eggs cannot be candled.

B. the chicks are less healthy

C. the brooding hens sometimes abandon the eggs.

D.it takes a longer time for eggs to hatch.


37. Ruminants fed on dried grasses are given feed supplements to

A. increase water intake

B. provide bulk to feed

C. reduce microbial activity

D. provide deficient nutrients


38. Which of the following animal diseases is not associated with malnutrition?

A. Aspergiliosis

B. Acidosis

C. Milk fever

D. Rickets


39. The botanical name of Northern gamba grass is

A. Cynodon daciylon

B. Panicum maximum

C. Penniselum purpureum

D. Andropogon gayanus


40. The cut and carry system of feeding livestock is termed

A. rotational grazing

B. zero grazing

C. mixed grazing.

D. controlled grazing


ANSWERS

41. Progeny selection involves selection of breeding stock on the basis of

A. feed conversion efficiency of the parents

B. merits of each animal

C. merits of the dam only

D. performance of offspring


42. The cattle disease which is likely to be most common in the forest belt of West Africa is

A. foot and mouth

B. trypanosomiasis

C. anthrax

D. tuberculosis


43. Hcto-parasites can be controlled by

A. administering antibodies to host

B. administering antibiotics to host

C. dipping of host

D. deworming of host


44 Cropping in fish farming is the act of

A. stocking fish

B. processing fish

C. harvesting fish

D. feeding fish.


45. Methods of preserving fish include the following except

A. drying

B. smoking

C. salting

D. soaking


ANSWERS

46. Determine the price elasticity of demand if the price of yam tuber rises by 10% (0.1) and the quantity demanded/alls by 5% (0.05).

A. 0.5

B. 0.4

C. 0.3

D. 0.1


47. Most farm businesses fail because of

A. death of the manager

B. lack of capital

C. labour problems

D. poor management


48. Which of the following activities is not a marketing function?

A. Buying of agricultural commodities

B. Planting of crops

C. Transporting of farm produce

D. Storage of farm produce


49. Risks on commercial farms could result from

A. price stability

B. crop failure

C. insurance.

D. diversification.


50. An agricultural extension officer should be able to

A. create new jobs for farmers

B. raise funds for farmers

C. cultivate a large farm

D. guide and educate farmers



WASSCE 2016 AGRICULTURAL SCIENCE

OBJECTIVE TEST ANSWERS

l. B 2. B 3. C 4. D 5. B 6. D 7. B 8. A 9. B 10. C

11. D 12. B 13. A 14. B 15. A 16. C 17. A 18. D I 9. C 20.C

21. A 22. C 23. C 24. B 25. D 26. D 27. B 28.B 29. B 30. A

31.C 32. C 33. B 34. C 35. B 36. A 37. D 38. A 39. D 40. B

41.D 42. B 43. C 44. A 45. D 46. A 47. D 48. B 49. B 50. D


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