Agricultural Science SS 3 Third Term Mock Examination

MOCK EXAMINATION

Examination malpractices may lead to a repeat of the subject or suspensions don’t be involved.

SUBJECT: AGRIC.SCIENCE

TIME ALLOWED: 2HRS

Part A

OBJECTIVES

1. The achievement of agricultural extension programmes can be assessed by stakeholders at the

Stage. (a) development (b) evaluation (c) identification (d) implementation (e) planting

2. Which of the following farm accounts can be used to access the net worth of a farm? (a) Balance sheet (b) Cash analysis account (c)Income statement account (d) Profit and loss account (e)Purchase account

Use the following information to answer questions 3 and 4 Government brought maize seed at #100/kg and sold at #80/kg to framers during planting seasons.

3. The intention of the government is to give to the farmers. (a) Bonus (b) Credit (c) Grant (d) Loan (e) Subsidy

a. Calculate the percentage reduction given to farmers. (a) 20% (b) 30% (c) 40% (d) 50% (e) 60%

4. When a farmer lists farm inputs to be purchased in order of priority, he said to have drawn a (a) choice list (b) demand schedule (c) resource list (d) scale of preference (e) supply schedule

5. Semen for artificial insemination is processed in order to (a) Ease its reception by the female animals. (b) Extend its shelf life (c) Facilitate ease of transportation (d) improve its quality and purity (e) makes its collection easier

6. The problem associated with selection in animal improvement is that (a) Desirable traits of some parents are excluded (b) It emphasizes reduction in spread of disease (c)It is based on naturally available animals (d) Only best preformed animals are selected (e) Risk of morality is minimally reduced

Use the information below to answer questions 7 and 8

An experiment involving poultry birds conducted in Kano was replicated in Yenagoa in March 2016 under similar management practices. It was however observed that the birds in Yenagoa consumed significantly more feed than those raised in Kano

7. Which of the following was possible with the birds raised in Kano? (a) Bird huddling (b) Feeding on mouldy feed (c)Heat stress (d) High mortality (e)Optimum production

8. What could have led to the high feed consumption by the birds raised in Yenagoa? (a) Feed and water were served ad libitum (b) Feed was available in the area (c) High relative humidity (d) There was high relative temperature (e) The area had moderate wind velocity

9. In order to ensure that honey productions bees are not disturbed from time to time, it is advised that a farmer should

(a) Never put warning symbols at apiaries (b) Place the location of apiaries far from human dwelling (c) Put warning symbols far from apiaries (d) Set smokers away from apiaries

1 CLASS: S.S 3(e) Wear protective coverings to the apiaries

10. Which of the following additives should be used in the preparation of ensiled grasses and

legumes to aid its palatability to the animals? (a) calcium bicarbonate (b) molasses (c)

premix (d) salt lick (e) sodium chloride

Use the information below to answer questions 12 and 13

Animal husbandman harvested pasture grasses for his lactating cow instead of allowing

it to graze directly on the field. He later observed that the animal developed swollen,

distended stomach and was very uncomfortable when touched.

11. The method of feeding embarked upon by the husbandman is referred to as

grazing. (a) continuous (b) paddock (c) pastoral (d) strip (e) zero

12. Which disease is responsible for condition observed on the cow?

(a) Bloat (b) Ketosis (c) Milk fever (d) Osteomalacia (e) Perosis

13. During the process of exhalation in farm animal, which of the following takes places

within and around the lungs? The

(a) Diaphragm contracts (b)Diaphragm forms a dome shape (c)Intercostal muscles

contracts (d)Stemum moves forward (e)Volume of thoracic cavity increases

14. A farmer who administered iron dextrin injections his pocket intends to prevent

(a) Anaemia (b) Heamorrhage (c)Nervous disorder (d) Night blindness

(e) Sterility

15. The purpose for which an animal is kept should be considered as a factor in feed

formulation in order to

(a) Increase intake of feed by the animal (b) Increase the palatability of feed

(e) Reduce the quality of feed to produce

16. The part of the digestive system of a pig which functions in the same way as the rumen

of a goat is (a) caecum (b) colon (c) duodenum (d) pancreas (e) rectum

Use the information below to answer questions 18 and 19.

Mr. Ameen resides in the rainforest zone. He observed that the very tall perennial

grasses, tuffed in large clumps, with high yield, have a very high level of drought

resistant among the grasses that grew in his pasture land which is located close to his

house.

17. The grass observed by him is __________ grass

(a) Bahama (b) Carpet (c) Elephant (d) Guinea (e) Spear

18. What is the botanical name of the grass he observe?

(a) Axonopus compressus (b) Cynodon plestostotachyum

(e) Pennisetum purpureum

19. Black pod disease of cocoa is caused by

(a) Bacterium (b) Fungus (c) Nematode (d)Protozoa (d)Virus

20. The disease of cocoa that is characterized by swelling of branches, malfunction and

premature defoliation of leaves is commonly transmitted by

(a) Infected tools (b) Mealy bugs (c) Rain splash (d) White fly (e) Wind

21. Weed control is important in rangeland management because

(a) Animals do not graze on weeds (b) Most weeds stop light penetration

(b)Some weeds are poisonous to animals

(d) Weeds prevent pests infestation

22. Yield of crop are affected by weeds because the weeds

(a) Control erosion on the farm (b) Decay to form organic manure

(b) Decrease the cost of production (d)Serve as alternative host for disease

(e) Serve as mulching material

Use the information below to answer questions 24 and 25. Cassava farm was

observed to have leaves eaten by variegated grasshopper and tubers eaten by rodent

23. Which of the following methods will be inappropriate to control the rodents?

(a) Fencing of the farm (b)Setting farmland on fire (c)Setting of traps

(d) Shooting with guns (e) Use of rodenticides

24. What preventive measure would have been taken by the farmer to avoid the damage

done by variegated grasshopper?

(a) Spaying of leaves with fungicides (b) Timely planting at right spacing.

(e) Use of rodenticides.

25. Chlorosis in crops can be corrected by the application of

(a) Basic slag. (b) Gypsum. (c) Muriate of potash. (d) Urea. (e)Wood ash.

26. In water cycle, the land receives water through

(a) Evaporation. (b)Infiltration. (c)Putrefaction. (d) Respiration. (e)Transpiration.

27. An alkaline soil can be found mainly in___________ area.

(a) Arid (b) Fresh water swamp (c)Guinea savannah (d)Mangrove

(e) Tropical rain forest

28. Which of the following edaphic factors causes toxicity to plants and animals? Soil

(a) Fertility (b) pH (c) structure (d) texture (e) type

29. An example of secondary rock mineral is

(a) Hematite (b) Hornblende (c) Limonite (d) Oxide of metals (e)Pyroxene

30. The most important benefit that can be derived from agriculture in West Africa is the

provision of

(a) Food (b) Shelter (c) Raw material (d) Foreign exchange (e) Building material

31. The land tenure system that allows for individual ownership is the

(a) Leasehold (b)Freehold (c) Tenancy (d) Pledge (e)Rent

32. An agricultural system that makes the use of farm machines difficult is

(a) Mono cropping (b)Monoculture (c)Mixed cropping (d)Alley cropping

(e) Mixed farming

33. Which of the following chemicals is used for liming soils?

(a) Ammonium hydroxide (b) Copper oxide (c) Calcium oxide (d)Sodium hydroxide

(e) Potassium hydroxide

34. The ecological zone of west Africa which best support ruminant production is the

(a) Mangrove swamp (b) Evergreen forest (c)Guinea grassland (d)Deciduous forest

(e) Sahel savannah

35. Land rotation is the modified form of

(a) Pastoral farming (b) Crop rotation (c)Shift cultivation (d)Mixed farming

(e) Mono cropping

36. Organic waste from a farm was accidentally spilled into a river. One effect that the

spillage would have on the river is to decrease in

(a) Its turbidity and pH (b) The number of bacteria present (c)Its oxygen concentration

(d) The amount of sea weed (d) The amount of silt

337. Determine the ratio of nutrients in NPK 5 – 10 – 15

(a) 1 : 2 : 3 (b) 1 : 2 : 2 (c)1 : 3 : 1 (d)2 : 1 : 3 (e)3 : 2 : 1

38. The method of fertilizer application that is most appropriate for supplying micro-nutrients

to crops is

(a) Foliar application (b) Side dressing (c)Broadcasting (d) Drilling (e)Forecasting

39. Sprinkler irrigation is the example of

(a) Micro-irrigation (b) Overhead irrigation (c) Sub-surface irrigation

(d) Basin irrigation (e) Natural irrigation

40. Wood ash is usually added to the soil in order to

(a) Increase the organic matter content (b) Increase soil acidity

(b) Increase soil pH (d) Increase soil moisture (e) Reduces parent material

41. An advantage of animal traction over the use of tractor is that animal traction

(a) Increase soil acidity (b) Minimizes hardpan formation (c)Enhances environmental

cleanliness (d) Improves soil texture (e) Improves soil water holding capacity

42. A characteristic of solar energy in West Africa is that it

(a) Needs very little servicing (b)Has a low output (c)Is abundant in supply

(d) Is expensive to harness (e) inadequate supply

43. The scythe is a farm tool used for

(a) Grinding maize (b) Planting crops (c)Sowing seeds (d)Harvesting grains

(e) Gathering trash

44. The tank of the knapsack is usually made of plastic in order to

(a) Minimize temperature fluctuation (b) Facilitate compression of the chemical

45. The type of regulation control of diseases in crop production is

(a) Rouging (b) Quarantine (c)Crop rotation (d) Soil sterilization (e) Mixed cropping

46. The main reason for mulching soil is to

(a) Conserve soil water (b) Improve soil structure (c) Protect soil micro-organisms

(d) Improves soil aeration (e) Prevent erosion

47. A plot of land where fruit trees are cultivated is called a/an

(a) Garden (b) Orchard (c) Nursery (d) Meadow (e) Paddock

48. An appropriate chemical control method for cocoa mirids by spraying with

(a) Rodenticides (b) Fungicides (c) Herbicides (d) Insecticides

(e) Uproot and burn

49. Seed producer grow their seeds in isolation in order to

(a) Prevent damage by birds (b)Improve crop yield (c)Maintain genetic purity

(d) Promote early maturity (e) To prevent spread disease

50. The gestation period of ewes is (a) 336 days (b) 280days (c) 145days (d) 114days

(e) 120 days

51. Billy kids that are not to be kept for breeding purpose should be

(a) Isolated (b) Quarantined (c) Disbudded (d) Notched (e) Castrated

52. Nervous disorder in farm animals could result from a deficiency of

(a) Sodium (b) Calcium (c) Zinc (d) Potassium (e) Phosphorus

53. The Part of an incubator that holds the eggs in place is the

(a) Thermometer (b)Felt tray (c)Hydrometer (d) Water tray (e) Thermostat

54. The average gestation period of a cow is

(a) 114 days (b)145 days (c) 210 days (d) 280 days (e) 240 days

55. An example of secondary rock mineral is

(a) Hematite (b) Hornblende (c) Limonite (d) Oxide of metal (e) Pyroxene

56. An alkaline soil can be found mainly in ___________ area. (a) Arid (b)Fresh water swamp (c)Guinea savannah (d)Mangrove (e)Tropical rain forest

57. A mill that processes flour for making bread will need____________ as its major raw material. (a) maize (b) millet (c) Rice (d) sorghum (e) wheat

58. The farming system that allows mutual interaction between its ecological components is (a) Continuous cropping (b) Mixed cropping (c) Mixed farming (d)Mono cropping (e) Sole cropping

59. Which of the following edaphic factors causes toxicity to plants and animals? Soil (a) Fertility (b) pH (c) structure (d) texture (e)type

60. In water cycle, the land receives water through (a) Evaporation (b) Infiltration (c) Putrefaction (d) Respiration (e) Transpiration

Part B

THEORY There are four section in this part. Answer one question only from each section All questions carry equal marks

Section A

1a. Mention four roles of government in the development of agriculture in your country. [4 marks]

1b. Enumerate three roles of science and technology in agricultural development under the following Headings:

i. Animal breeding;

(ii) Soil science. ( 6 marks]

c. State three reasons why farm mechanization is not widely practiced in West Africa. [3 marks]

d. Give three advantages of manual labour over the use of machine in farm operation. [3 marks]

2a. State three problems of agricultural development in West Africa.

[3 marks]

2b. Enumerate three benefits of commercial farming.

2c. List two farm machinery and two farm implement.

2d. Describe how the Gunter’s chain is used.

Section B

3a. Distinguish between macro-nutrient and micro-nutrients.

3b. Mention three factors that influence the available of nutrients in the soil. [2 marks] [3 marks]

3c. State four ways by which each of the following factors affects land availability for agriculture in your country:

i. communal land tenure system;

ii. soil types.

iii. Leasehold tenure system [8 marks]

d. Mention three problems associated with drainage systems on farms.

[3 marks]

4. a. Mention four biotic factors that affect agricultural production.

4b. State four negative effect of each of the following farming practices on the soil: i. continuous grazing; ii. overgrazing.

4c. Give two advantages and two disadvantages of surface drainage.

Section C

5a. Discuss the cultivation of maize under the following headings:

i. climatic requirement;

ii. soil requirement;

iii. cultural practices;

iv. processing and storage; two diseases;

b. State four benefits of forests to the economic development to your country.

c. Mention two effects of diseases on crops.

6a. Name six cereal crops grown in your country.

b. state two advantages and disadvantages of afforestation.

c. I. List the three major groups of insect-pests of crops on the basis on their mouth parts.

II. Give two examples of each of the insect-pests of crops in the groups listed in 6(c) (i) above.

Section D 7a. List two intensive systems of poultry management.

b. State one advantage and one disadvantages of each of the systems listed in 7(a).

c. State two functions of each of the following nutrients in the diet of farm animal:

I. Vitamins;

II. Proteins;

III. Carbohydrates.

d. Enumerate four signs of heat in farm animals.

8.a. List two viral and two protozoan diseases of livestock.

b. State three sanitation practices that help to prevent the outbreak of diseases on Livestock farms.

c. Define each of the following terms as used in animal reproduction: I. Ovulation; II. Lactation.

d. List three classes of animal feeds based on their nutrient composition.

e. Mention two methods of improving local breeds of farm animals.

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