Agricultural Science past questions: WAEC SSCE 2021

49 objective questions, with answers. Free to read and practise.

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49 questions, one at a time, marked as you go or at the end. No account needed.

1.
[img: Open photo] The major source of water to the plants in the diagram is
1. A.gravitational water
2. B.hygroscopic water
3. C.capillary water
4. D.surface water
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Answer: C capillary water
2.
A farmer practices crop rotation in order to
1. A.reduce yield
2. B.improve soil texture
3. C.increase pest incidence
4. D.improve soil fertility
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Answer: D improve soil fertility
3.
A long-term loan for an agricultural enterprise could be obtained from
1. A.micro-finance banks
2. B.commercial banks
3. C.money lenders
4. D.cooperative societies
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Answer: B commercial banks
4.
A plot of land devoted to the cultivation of fruit trees is called
1. A.orchard
2. B.farmstead
3. C.forest
4. D.ranch
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Answer: A orchard
5.
A suitable grass for lawns is
1. A.Andropogon gayanus
2. B.Pennisetum purpureum
3. C.Cynodon dactylon
4. D.Panicum maximum
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Answer: D Panicum maximum
6.
A tractor-mounted sprayer used on large scale farms is the
1. A.electrodyne sprayer
2. B.motorised sprayer
3. C.knapsack sprayer
4. D.boom sprayer
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Answer: B motorised sprayer
7.
An advantage of zero-grazing is that it
1. A.requires a lot of labour
2. B.prevents livestock from physical exercises
3. C.prevents depletion of pasture
4. D.increases the cost of pasture management
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Answer: C prevents depletion of pasture
8.
Drying of newly harvested grains before storage helps to increase the
1. A.moisture content
2. B.pest incidence
3. C.seed viability
4. D.nutrient content
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Answer: C seed viability
9.
Elaeis guineensis and Arachis hypogaea are examples of
1. A.latex crops
2. B.oil crops
3. C.fibre crops
4. D.fruit crops
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Answer: B oil crops
10.
Feeds that have more than 18% fibre are classified as
1. A.concentrates
2. B.additives
3. C.supplements
4. D.roughages
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Answer: D roughages
11.
Formation of blisters on the mouth and the skin around the hoof of farm animals is a symptom of
1. A.rinderpest
2. B.anthrax
3. C.Newcastle disease
4. D.foot and mouth disease
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Answer: D foot and mouth disease
12.
Horse racing and polo are events where horses are used for
1. A.wildlife conservation
2. B.recreation
3. C.dowry payment
4. D.transportation
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Answer: B recreation
13.
If 0.7kg of feed was fed to chicks per week, determine the cost of feeding the birds for 6 weeks. (1kg of feed costs #5)
1. A.#4.20
2. B.#11.70
3. C.#21.00
4. D.#30.00
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Answer: C #21.00
14.
In an experiment determine the percentage of organic matter in a soil sample, the following data was collected; weight of over-dried soil before burning = 50g weight of over-dried soil after burning = 28g. Use the information to answer this question. Calculate the weight of organic matter in the soil
1. A.11g
2. B.22g
3. C.44g
4. D.78g
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Answer: B 22g
15.
In an experiment determine the percentage of organic matter in a soil sample, the following data was collected; weight of over-dried soil before burning = 50g weight of over-dried soil after burning = 28g. Use the information to answer this question. Determine the percentage of organic matter in the soil
1. A.22%
2. B.44%
3. C.56%
4. D.60%
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Answer: B 44%
16.
In planning a farmstead, the structure which should be located on high elevation is the
1. A.fish pond
2. B.pigsty
3. C.farmhouse
4. D.processing shed
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Answer: C farmhouse
17.
In sheep production, tapeworm could be controlled by
1. A.dusting
2. B.spraying
3. C.dipping
4. D.drenching
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Answer: C dipping
18.
Microorganisms that decompose organic matter will function best under
1. A.waterlogged soil condition
2. B.anaerobic soil condition
3. C.low soil tempertaure
4. D.optimum soil PH
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Answer: D optimum soil PH
19.
Okro seeds are sown on 0.72 hectares of farmland at a spacing of 60cm. Calculate the expected plant population
1. A.3,600 plants
2. B.7,200 plants
3. C.10,000 plants
4. D.20,000 plants
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Answer: D 20,000 plants
20.
Propagation of ginger is generally done using it's
1. A.corn
2. B.rhizome
3. C.sucker
4. D.seed
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Answer: B rhizome
21.
The basic importance of agriculture to a forester is to
1. A.obtain honey
2. B.obtain food
3. C.acquire labour
4. D.procure timber
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Answer: D procure timber
22.
The best way for a young animal to obtain colostrum is by
1. A.giving it powdered milk
2. B.providing it with warm milk
3. C.injecting it with progesterone
4. D.allowing it to suckle the dam
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Answer: D allowing it to suckle the dam
23.
The botanical name of onion is
1. A.Zea mays
2. B.Oryza sativa
3. C.Carica papaya
4. D.Allium cepa
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Answer: D Allium cepa
24.
The branch of crop science which deals with the study of insect pests is
1. A.zoology
2. B.agronomy
3. C.entomology
4. D.pathology
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Answer: C entomology
25.
The breeds of cattle resistant to trypanosomiasis are
1. A.N'dama and moturu
2. B.White fulani and biu
3. C.Red bororo and adamawa
4. D.Wadara and sokoro gudali
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Answer: A N'dama and moturu
26.
The causative organism of maize rust is a
1. A.bacterium
2. B.protozoon
3. C.virus
4. D.fungus
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Answer: D fungus
27.
The construction of rural feeder roads solves the following access problems in agriculture except
1. A.marketing
2. B.transportation
3. C.extension services
4. D.land tenure system
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Answer: D land tenure system
28.
The diagram above illustrates a farm tool. Use it to answer this question. The farm implement that could perform a similar function as the illustrated tool is
1. A.plough
2. B.harrow
3. C.ridger
4. D.cultivator
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Answer: C ridger
29.
The diagram above illustrates a farm tool. Use it to answer this question. The illustrated farm tool is used for
1. A.making mounds
2. B.transplanting seedlings
3. C.cutting trees
4. D.pruning hedges
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Answer: A making mounds
30.
The diagram above illustrates a tool used in animal production. use it to answer this question. The illustrated tool is
1. A.an elastrator
2. B.a burdizzo
3. C.an electric dehorner
4. D.an artificial vagina
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Answer: D an artificial vagina
31.
The diagram below illustrates a farm operation. Study it and answer this question. [img: Open photo] Which of the following statements is not a reason for carrying out the illustrated farm operation? To
1. A.expose the leaves to sunlight
2. B.prevent damage by rodents
3. C.improve the yield of the crop
4. D.prevent lodging of the plants
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Answer: D prevent lodging of the plants
32.
The diagram below illustrates a farm operation. Study it and answer this question. Crops which require the illustrated farm operation are
1. A.yam and cowpea
2. B.tomato and okro
3. C.okro and pepper
4. D.tomato and yam
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Answer: D tomato and yam
33.
The diagram below illustrates processes in the water cycle. Use it to answer this question. [img: Open photo] The process labelled I is.
1. A.evaporation
2. B.absorption
3. C.respiration
4. D.transpiration
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Answer: D transpiration
34.
The diagram below illustrates processes in the water cycle. Use it to answer this question. [img: Open photo] The process labelled II is
1. A.transpiration
2. B.condensation
3. C.evaporation
4. D.respiration
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Answer: C evaporation
35.
The following factors are essential for maize production except
1. A.high temperature
2. B.low temperature
3. C.relative humidity
4. D.adequate rainfall
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Answer: A high temperature
36.
The new rock formed when limestone is subjected to great heat and pressure is
1. A.slate
2. B.graphite
3. C.marble
4. D.gneiss
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Answer: D gneiss
37.
The phosphorus cycle is described as being sedimentary because phosphorus
1. A.is a macroelement
2. B.is an earthbound element
3. C.is solid at room temperature
4. D.occurs in the atmosphere
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Answer: A is a macroelement
38.
The table below illustrates the supply schedule of maize. Use it to answer this question.
PRICE(#) QUANTITY SUPPLIED (kg)
24 480
16 400
Calculate the percentage change in price for maize
1. A.8.0%
2. B.33.3%
3. C.50.0%
4. D.66.7%
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Answer: B 33.3%
39.
The table below illustrates the supply schedule of maize. Use it to answer this question.
PRICE(#) QUANTITY SUPPLIED(kg)
24 480
16 400
Determine the elasticity of supply for maize
1. A.0.3
2. B.0.4
3. C.0.5
4. D.0.6
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Answer: B 0.4
40.
The table below illustrates the supply schedule of maize. Use it to answer this question.
PRICE(#) QUANTITY SUPPLIED(kg)
24 480
16 400
The percentage change in quantity supplied for maize is
1. A.16.7%
2. B.20%
3. C.80%
4. D.83.3%
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Answer: A 16.7%
41.
Two species of kola grown for commercial purposes in West Africa are
1. A.Cola acuminata and cola gigantea
2. B.Cola nitida and cola verticillata
3. C.Cola nitida and cola acuminata
4. D.Cola verticillata and cola gigantea
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Answer: B Cola nitida and cola verticillata
42.
Which of the following features is not a characteristic of a good layer
1. A.Bright red comb and wattle
2. B.Long and curved beak
3. C.Bright and bulging eyes
4. D.Broad and flexible pelvic bone
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Answer: B Long and curved beak
43.
Which of the following groups of insect pests damages crops by bitting and chewing?
1. A.cotton stainer, armyworm and cricket
2. B.cricket, mealybug, and whitefly
3. C.armyworm, termite nd grasshopper
4. D.cotton stainer, mealybug and termite
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Answer: C armyworm, termite nd grasshopper
44.
Which of the following pairs of raw materials is used in the canning industry
1. A.meat and fish
2. B.cotton and sea
3. C.hide and skin
4. D.pulpwood and cocoa
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Answer: A meat and fish
45.
Which of the following practices will improve clay soil?
1. A.use of acid-forming fertilizers
2. B.bush burning
3. C.addition of sodium chloride
4. D.addition of organic material
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Answer: D addition of organic material
46.
Which of the following problems of agriculture could be solved through farmers' adoption of research findings?
1. A.Unpredictable climate
2. B.Environmental degradation
3. C.poor extension services
4. D.Insufficient basic amenities
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Answer: C poor extension services
47.
Which of the following statement about slatted floors in livestock housing are true? They I.lessen labour requirements II.reduce odour in pens III.hamper movement of animals
1. A.I and II only
2. B.I and III only
3. C.II and III only
4. D.I,II and III
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Answer: C II and III only
48.
Which of the following types of farm power does not cause pollution?
1. A.hydro
2. B.electrical
3. C.mechanical
4. D.chemical
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Answer: A hydro
49.
Yam stored in a barn should be inspected at least once a week in order to
1. A.remove irregular shaped tubes
2. B.control termite attack
3. C.prevent mouldiness in yam
4. D.remove sprouts and rotten tubers
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Answer: D remove sprouts and rotten tubers

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PRICE(#)	QUANTITY SUPPLIED (kg)
24	480
16	400

PRICE(#)	QUANTITY SUPPLIED(kg)
24	480
16	400

PRICE(#)	QUANTITY SUPPLIED(kg)
24	480
16	400