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AGRICULTURAL SCIENCE (Objective Questions And Answers)


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THEORY QUESTIONS
WAEC SYLLABUS

WASSCE 2006

Objectives



​1. The problem of land availability for agriculture can be solved by

A. compulsory acquisition of all pieces of land in dispute

B. enacting laws to regulate access to land

C. creating more land through land reclamation

D. collecting land rent from prospective farmers


2. Wastage of agricultural produce may not be worsened by

A. poor transportation

B. land fragmentation

C. inadequate storage facilities

D. inadequate processing facilities


3. The replacement of traditional farming methods with modern methods is a step in agricultural

A. expansion

B. education

C. inadequate storage facilities

D. inadequate processing facilities


4. Which of the following statements is not an impediment to the development of agriculture in West Africa?

A. Teeming population of insect pests

B. Aggressive agricultural extension

C. Chaotic marketing systems

D. Pollution of the environment


5. Which of the following statements is not correct about Land Use Act?

A. Land cannot be used for any purpose

B. Government has control over unused land

C. It does not lead to land fragmentation

D. It aims at re-allocation of land for farming purposes


ANSWERS

6. The difference between subsidy and loan is that subsidy

A. is a short term credit while loan is a long term credit

B. is a medium credit while loan is a short term credit

C. requires a collateral while loan does not

D. is not refundable while a loan is refundable


7. Which of the following statements best describes subsistence agriculture?

A. the rearing of animals only

B. Small scale production of crops and livestock

C. Raising of crops and animals for sale

D. Use of machines in agricultural production


8. The main aim of wild life management is to

A. prevent extinction of species

B. provide lots of cheap protein

C. generate foreign exchange through exportation of meat

D. reduce the population of trypanosome parasite


9. Which of the following groups of crops will perform better in the savannah zone of West Africa?

A. Cotton, millet and groundnut

B. Cotton, coffee and cocoa

C. Tobacco, sorghum and banana

D. Sorghum, millet and oil-palm


10. The largest kolanut producing vegetation zone in West Africa is the

A. sahel savanna

B. sudan savanna

C. derived savanna

D. mangrove swamp


ANSWERS

11. Which of the following processes does not lead to the physical disintegration of rocks? The

A. heating and cooling of rock surfaces

B. expansion and contraction of rock minerals

C. formation of cracks and crevices in the rocks

D. rapid cooling and solidification of rocks


12. The two main elements of climate which affect soil formation are

A. rainfall and temperature

B. rainfall and air

C. temperature and light

D. wind and relative humidity


13. Soil erosion caused by water can be controlled by

A. overgrazing and bush burning

B. ploughing and harrowing

C. land clearing and stumping

D. afforestation and erection of bunds


14. Although, clayey soils are rich in nutrients, they are not good for most agricultural production because they

A. do not release their nutrients

B. are too compact and aerated

C. lose their nutrients too readily after rains

D. contain too much iron, aluminium and boron


15. The plant nutrient essential for the formation of tubers is

A. molybdenum

B. phosphorus

C. potassium

D. sodium


ANSWERS

16. A fertilizer bag had the following 27:10:10. This means it contained

A. 27 kg of nitrogen, 10 kg of phosphate, 10 kg of potash

B. 27 kg of phosphate, 10 kg of potash,10kg of nitrogen

C. 27kg of potash, 10 kg of nitrogen, 10kg of phosphate

D. 27 kg of phosphate, 10kg of potash,10kg of phosphate


17. Which of the following farming practices encourages soil degradation?

A. Fertilizer application

B. Bush burning

C. Cover cropping

D. Fungicide application


18. Irrigation water is passed underneath the soil through

A. sprinklers

B. canals

C. drips

D. pipes


19. A good draught bull should not have

A. a deep barrel

B. a slopy rump

C. long legs

D. strong hooves


20. Which of the following sources of farm power generates the highest amount of energy?

A. Human power

B. Wind power

C. Animal power

D. Mechanical power


ANSWERS

21. A spade is mainly used for

A. weeding

B. pruning

C. planting

D. digging


22. The function of the scrapper on a disc plough is to

A. scrape the top soil

B. remove adhering soil from the disc

C. open the furrow

D. balance the plough


23. Post- harvest equipment include

A. sheller and dryer

B. groundnut lifter and dryer

C. combine and forage harvesters

D. sheller and combine harvester


24. Which of the following is not a survey equipment?

A. Cross staff

B. Prismatic compass

C. Offset poles

D. Telescope


25. Which of the following methods is used in conducting a simple farm lay-out survey?

A. 5:3:4

B. 4:3:3

C. 3:4:5

D. 3:3:4


ANSWERS

26. Which of the following sequence of pre-planting operations is correct?

A. Bush clearing, farm layout, burning and stumping

B. Stumping, bush clearing, farm layout and burning




27. A plant not normally used as green manure is

A. Mucuna utilis

B. Sida acuta

C. Centrosema pubescens

D. Pueraria phaseoloides


28. Which of the following agronomic practices is not applicable to rice production?

A. Threshing

B. Transplanting

C. Staking

D. Pudding


29. To which of the following survey equipment is a piece of red cloth tied when it is being used?

A. Cross staff

B. Plumb bob

C. Gunter’s chain

D. Arrow


30. Which of the following is not a leguminous forage crop?

A. Centrosema pubescens

B. Panicum maximum

C. Stylosanthes gracilis

D. Pueraria phaseoloides




ANSWERS

31. Which of the following will not be a reason for afforestation?

A. Population pressure

B. Soil fertility conservation

C. Wildlife conservation

D. Prevention of natural hazard


32. Mosaic disease affects

A. cotton and cocoa

B. groundnut and tomato

C. cassava and tomato

D. mango and orange


33. Which of the following is a symptom of black pod disease of cacao?

A. Diseased leaves fall prematurely

B. Characteristic swellings appear on young stem and shoots

C. A small brown spot first appears on the pod

D. Veins of diseased leaves become red in colour


34. Which of the following insect groups readily attacks dry grains?

A. Boring insects

B. Biting insects

C. Sucking insects

D. Piercing insects


35. Rosette disease of groundnut is transmitted by

A. an eelworm

B. a grasshopper

C. a white fly

D. an aphid


ANSWERS

36. The control of spear grass on the farm is difficult because

A. it produces a large quantity of seeds

B. it is easily propagated by suckers

C. it has a very persistent rhizome

D. seeds persist in the soil for a long tome


37. The use of fungal pathogens to control dodder weeds is a

A. physical method

B. mechanical method

C. biological method

D. cultural method


38. Hybrid vigour in crop improvement is brought about through

A. introduction

B. mass selection

C. inbreeding D. cross breeding


39. Which of the following structures is not part of the digestive tract of pigs?

A. Oesophagus

B. Proventriculus

C. Duodenum

D. Colon


40. The urethra in the male animal is described as a urinogenital duct because it

A. opens to the outside through the penis

B. is attached to the accessory sex glands

C. is a common pathway fro urine and sperms

D. is the site for the storage of sperms


ANSWERS

41. The act of giving birth in farm animals is called

A. hatching

B. laying

C. parturition

D. gestation


42. Oestrogen in females is responsible for

A. development of secondary sexual characteristics

B. start of oestrus cycle

C. parturition

D. attainment of puberty


43. Iodine is normally applied to the severed umbilical cord of a piglet so as to

A. supply iodine needed by the piglets for growth

B. reduce maturity period

C. prevent the entry of micro-organisms into the piglet

D. produce pigs without much abdominal fat


44. Broilers are generally marketed at the age of

A. 4-6 weeks

B. 8-10 weeks

C. 17-19 weeks

D. 20-22 weeks


45. The process of removing a young animal from its mother is known as

A. culling

B. breeding

C. weaning

D. isolation


ANSWERS

46. Which of the following classes of poultry feed has the highest protein content?

A. Chicks mash

B. Growers mash

C. Layers mash

D. Broiler starter


47. The vitamin which is essential for the growth of spermatozoa is males and the development of foetus in females is

A. Vitamin A

B. Vitamin D

C. Vitamin E

D. Vitamin K


48. The sequence of events in the reproductive process of a diary animal is

A. lactation, parturition, gestation and copulation

B. parturition, copulation, lactation and gestation

C. gestation, lactation, parturition and copulation

D. copulation, gestation, parturition and lactation


49. An unproductive animal permanently removed from a productive stock is said to be

A. quarantined

B. culled

C. isolated

D. disposed


50. Voiding of blood stained droppings by birds is a symptom of

A. fowl cholera

B. Coccidiosis

C. Newcastle disease D. fowl typhoid


ANSWERS

51. Nagana in cattle is otherwise known as

A. Trypanasome

B. Babiosis

C. Ascariasis

D. Fascioliasis


52. Government ensures continuous availability of fish through

A. fishing regulations

B. fish marketing

C. fish feeding

D. fish processing


53. Which of the following factors is not considered in selecting fish of stocking?

A. Marketability of the species

B. Ease of caring for fingerlings

C. Colour of the fingerlings

D. Ability of being reared in captivity


54. When different breeds of animals are mated, the process is known as

A. cross breeding

B. in-breeding

C. out- breeding

D. line breeding


55. The advantages derived from the efficient combination of factors of production in agriculture include the following except

A. reduced production cost

B. increased production cost

C. increased profit margins

D. increased gross revenue


ANSWERS

56. When a change in price brings no change in demand, the situation is described as

A. perfectly inelastic

B. perfectly elastic

C. fairly inelastic

D. fairly elastic


Use the information below to answer questions 57 to 59

A farmer purchased a sprayer for ₦12,500 in 1974, at the end of the fourth year he sold it for ₦4,300.


57. The total depreciation is

A.₦16,800

B. ₦8,200

C. ₦7,250

D. ₦820


58. The salvage value is

A. ₦1,075

B. ₦2,150

C. ₦4,300

D. ₦8,400


59. The annual depreciation of the equipment is

A. ₦33,600

B. ₦20,050

C. ₦2,050

D. ₦2,005


60. Agricultural information flows from

A. research institutes through the extension officer to the farmer

B. farmer to research institutes and to the extension officer

C. extension officer to farmer and finally to the research institutes

D. research institutes to farmer and to the extension officer.



WASSCE JUNE 2006 AGRICULTURAL SCIENCE

OBJECTIVE TEST ANSWERS

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

11.D 12.A 13. D 14.B 15.C 16.A 17.B 18.D 19.C 20.D

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

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

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

51.A 52.A 53.C 54.A 55.B 56.B 57.B 58.C 59. C 60.A


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