Agricultural Science past questions: JAMB UTME 2021

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

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

1.
A condition in which a gene does not manifest observable characteristics in the presence of its dominant allele is known as
1. A.dominance
2. B.mutation
3. C.recessiveness
4. D.homozygosity
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Answer: C recessiveness
2.
A farmer bought a farm implement for ₦12,500 in 2007. At the end of the fourth year, he sold it for ₦4,300. The annual depreciation of the implement is
1. A.₦4,300
2. B.₦3,125
3. C.₦2,050
4. D.₦1,075
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Answer: C ₦2,050
3.
A periodic maintenance activity carried out using a farm tractor is
1. A.checking of radiator water
2. B.checking of tire pressure
3. C.cleaning after use
4. D.changing of engine oil
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Answer: C cleaning after use
4.
A piece of land is said to be on lease to a farmer when the land is
1. A.inherited from the father
2. B.given to him as a gift
3. C.given as compensation
4. D.given for a specific period on rental basis
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Answer: D given for a specific period on rental basis
5.
An advantage of extensive system of rearing goats is
1. A.low labour requirement
2. B.easy control of disease
3. C.indiscriminate mating
4. D.exposure to adverse weather conditions
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Answer: A low labour requirement
6.
An important farm machine used for coupling many implements is
1. A.disc harrow
2. B.harvester
3. C.tractor
4. D.plough
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Answer: C tractor
7.
An increase in supply of agricultural produce can be caused by the following factors except
1. A.reduced cost of production
2. B.favourable weather conditions
3. C.reduced taxation
4. D.consumers buying less products
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Answer: D consumers buying less products
8.
Calculate the salvage value of a tractor with a depreciation value of ₦10,580.00 and initial cost of ₦50,000 after a year of use
1. A.₦10,580
2. B.₦30,290
3. C.₦39,420
4. D.₦60,580
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Answer: C ₦39,420
9.
Callosobruchus maculates is a common pest of
1. A.maize
2. B.cowpea
3. C.rice
4. D.millet
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Answer: B cowpea
10.
Farm surveying equipment include the following except
1. A.Abney level
2. B.Compass
3. C.Spade
4. D.Gunter's chain
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Answer: C Spade
11.
Fertile soil is one which
1. A.which easily drained
2. B.is well aerated
3. C.can produce a good harvest of cowpea
4. D.contain all essential plant nutrients in suitable proportion
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Answer: D contain all essential plant nutrients in suitable proportion
12.
Financial assistance from government to the farmers is usually in the following forms except
1. A.loan
2. B.tax
3. C.credit
4. D.susidy
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Answer: B tax
13.
Food shortage can be minimized by
1. A.efficient pest control services
2. B.natural hazards
3. C.illegal exportation of farm produce
4. D.hoarding
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Answer: A efficient pest control services
14.
Gestation period is defined as the time
1. A.of fusion of the sperm and the egg
2. B.between conception and parturition
3. C.of release of ovum from the ovary
4. D.of the birth of the young animal
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Answer: B between conception and parturition
15.
Ginger is propagated by
1. A.suckers
2. B.rhizomes
3. C.seeds
4. D.tuber
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Answer: B rhizomes
16.
Ginning is a method of processing
1. A.cocoa
2. B.cotton
3. C.oil palm
4. D.palm kernel oil
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Answer: B cotton
17.
Gummosis disease of citrus is caused by
1. A.aphids
2. B.fungi
3. C.white flies
4. D.bacteria
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Answer: B fungi
18.
Heavy infestation of liver fluke causes poor absorption of fats in livestock by
1. A.blocking bile ducts thus preventing flow of bile
2. B.destroying fat-digesting enzymes
3. C.reducing ingestion of fats
4. D.inhibiting the action of digestive enzymes
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Answer: D inhibiting the action of digestive enzymes
19.
If 100 pieces of pests is attacking an hectare of cocoa farm and 25% suddenly died while 40% of the remnant is sent for medical examination. What is the number of pest remaining?
1. A.45
2. B.50
3. C.25
4. D.75
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Answer: A 45
20.
If 200 layers will consume 25kg of feed per day. Calculate the amount of feed consumed by a layer per day.
1. A.0.25kg/day
2. B.0.2kg/day
3. C.0.5kg/day
4. D.0.125kg/day
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Answer: D 0.125kg/day
21.
If urea fertilizer contains 46% nitrogen, calculate the amount of nitrogen in 25kg bag of fertilizer?
1. A.11.5kg
2. B.13.5kg
3. C.21.5kg
4. D.26.5kg
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Answer: A 11.5kg
22.
In subsistence agriculture
1. A.yields are usually high
2. B.surplus produce is small
3. C.savings are made
4. D.farm sizes are large
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Answer: B surplus produce is small
23.
Layer's ration contains more limestone than grower's ration because limestone
1. A.is difficult for the growers to digest
2. B.stimulates layer's appetite
3. C.reduces the acidity in the gut if growers
4. D.supplies sufficient minerals to layers for shell formation
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Answer: D supplies sufficient minerals to layers for shell formation
24.
Methods of preserving fish include the following except
1. A.boiling
2. B.drying
3. C.smoking
4. D.salting
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Answer: A boiling
25.
Miracidium is one of the stages in the life cycle of
1. A.roundworm
2. B.liver fluke
3. C.tapeworm
4. D.tick
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Answer: B liver fluke
26.
Output is higher in commercial agriculture because of the following reasons except
1. A.adequate finance
2. B.cultivation of large hectares of land
3. C.employment of large labour force
4. D.utilization of complex farm machinery
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Answer: C employment of large labour force
27.
Rain water is made available to crops through
1. A.evaporation
2. B.transpiration
3. C.surface drainage
4. D.root absorbtion
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Answer: D root absorbtion
28.
Records of money transactions in a farming business are termed
1. A.farm inputs
2. B.farm accounts
3. C.capital
4. D.farm liabilities
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Answer: B farm accounts
29.
Rocks formed by the cooling and solidification of molten rocks called magma ejected from beneath the earth's crust is
1. A.Igneous rock
2. B.Metamorphic rock
3. C.Caleima rock
4. D.Sedimentary rock
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Answer: A Igneous rock
30.
Root-knot disease of tomato is caused by
1. A.virus
2. B.nematode
3. C.bacterium
4. D.fungus
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Answer: B nematode
31.
Subsistence agriculture is characterized by
1. A.used of machines
2. B.large scale production
3. C.small farm holdings
4. D.intensive use of inputs
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Answer: C small farm holdings
32.
The adult male cattle is called
1. A.bull
2. B.ram
3. C.boar
4. D.duck
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Answer: A bull
33.
The alternate heating and cooling of rocks result in
1. A.sublimation
2. B.volatilization
3. C.solidification
4. D.fragmentation
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Answer: D fragmentation
34.
The average weather condition of a place, measured over a long period of time is called
1. A.climate
2. B.wind
3. C.rainfall
4. D.temperature
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Answer: A climate
35.
The characteristic symptoms of mosaic disease of crops is usually observed on
1. A.roots
2. B.leaves
3. C.stems
4. D.fruits
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Answer: B leaves
36.
The correct sequence in the processes of crop improvement is
1. A.Introduction → selection → breeding
2. B.Breeding → selection → introduction
3. C.Breeding → introduction → selection
4. D.Introduction → breeding → selection
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Answer: A Introduction → selection → breeding
37.
The easiest method of determining soil texture in the field is by
1. A.moulding
2. B.sieving
3. C.sedimenting
4. D.feeling
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Answer: D feeling
38.
The effects of practicing crop rotation include the following except
1. A.maintaining and improving soil fertility
2. B.controlling soil erosion
3. C.adding humus to the soil
4. D.preventing the build-up of pests and diseases
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Answer: C adding humus to the soil
39.
The following are necessary operations in maize cultivation except?
1. A.weeding
2. B.thinning
3. C.nursery practices
4. D.fertilizer application
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Answer: C nursery practices
40.
The following processes in crops are sensitive to daylength except
1. A.fruiting
2. B.growth
3. C.flowering
4. D.branching
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Answer: D branching
41.
The horizon of a soil profile which encourages the greatest level of microbial activity is
1. A.A - horizon
2. B.B - horizon
3. C.C - horizon
4. D.D - horizon
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Answer: A A - horizon
42.
The hormone responsible for milk let down in female farm animals is
1. A.testosterone
2. B.FSH
3. C.Oxytosin
4. D.androgen
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Answer: C Oxytosin
43.
The main aim of mechanized agriculture is
1. A.reducing maturation time for crops
2. B.decreasing number of pests
3. C.having a large land area for cultivation
4. D.reducing cost of production
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Answer: C having a large land area for cultivation
44.
The main objectives of agriculture is
1. A.income generation
2. B.provision of employment
3. C.food production
4. D.provision of shelter
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Answer: C food production
45.
The main processes involved in the marketing of cotton include the following except
1. A.wedding
2. B.processing
3. C.grading
4. D.packaging
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Answer: A wedding
46.
The main source of power for subsistence agriculture is
1. A.animal
2. B.machine
3. C.electricity
4. D.man
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Answer: D man
47.
The method of irrigation suitable for use on a steep slope is
1. A.sprinkler irrigation
2. B.flood
3. C.furrow irrigation
4. D.shadoof
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Answer: D shadoof
48.
The most common factor affecting land use is
1. A.population pressure
2. B.solar radiation
3. C.climatic influence
4. D.type of soil
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Answer: A population pressure
49.
The most suitable source of power for stationary equipment on the farm is
1. A.machinery
2. B.electricity
3. C.animal
4. D.man
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Answer: B electricity
50.
The natural resource utilized for production is
1. A.capital
2. B.management
3. C.labour
4. D.land
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Answer: D land
51.
The practice of bee farming is called
1. A.Apiculture
2. B.Heliculture
3. C.Forestry
4. D.Agronomy
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Answer: A Apiculture
52.
The practice of mating closely related animals is called
1. A.pen mating
2. B.cross breeding
3. C.outbreeding
4. D.inbreeding
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Answer: D inbreeding
53.
The primary role of agriculture is the provision of
1. A.foreign exchange earnings
2. B.raw materials for industries
3. C.food for man and his animals
4. D.employment and income for farmers
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Answer: C food for man and his animals
54.
The problems associated with land tenure through inheritance include the following except
1. A.small land holdings for family members
2. B.hatred among family members arising from land sharing
3. C.right of individuals to free use and control of inherited land
4. D.difficulty to sell part of inherited land
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Answer: C right of individuals to free use and control of inherited land
55.
The source of food for fishes in the river is called
1. A.rotten leaves
2. B.planktons
3. C.micro-organism
4. D.algae
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Answer: B planktons
56.
The study of insect pests of crops is called
1. A.entomology
2. B.pathology
3. C.agronomy
4. D.synecology
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Answer: A entomology
57.
The system in which a farmer uses a piece of land for a period and abandons it for another land is called
1. A.crop rotation
2. B.mix cropping
3. C.shifting cultivation
4. D.leg farming
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Answer: C shifting cultivation
58.
The tree species commonly planted for pulp wood is
1. A.Gmelina
2. B.Cassia
3. C.Alibiza
4. D.Tectona
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Answer: A Gmelina
59.
The type of soil with a particle size of 0.02 to 0.002mm is
1. A.clay
2. B.slit
3. C.fine sand
4. D.coarse sand
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Answer: B slit
60.
What is the full meaning of IITA?
1. A.International Institute of Tropical Agriculture
2. B.International Institution of Tropical Agriculture
3. C.Institute of Investment and Trade Agriculture
4. D.Interlude Institute of Tropical Agriculture
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Answer: A International Institute of Tropical Agriculture
61.
What is the percentage water content of soil sample which weighed 180g when fresh and 120g when oven-dried?
1. A.20.14%
2. B.25.00%
3. C.33.33%
4. D.60.00%
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Answer: C 33.33%
62.
Which of the following agricultural extensions aims at reaching a large number of farmers at the same time?
1. A.mass method
2. B.group method
3. C.individual method
4. D.contact method
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Answer: A mass method
63.
Which of the following constitutes subsidy in agricultural enterprise?
1. A.supply of fertilizers to farmers at reduced price
2. B.borrowing of money from a thrift society
3. C.provision of money to farmers through commercial banks
4. D.provision of services through cooperative societies
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Answer: A supply of fertilizers to farmers at reduced price
64.
Which of the following equipment is a farm implement?
1. A.dryer
2. B.sheller
3. C.mower
4. D.mistblower
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Answer: D mistblower
65.
Which of the following factors influence agricultural production is biotic factor?
1. A.parasite
2. B.soil PH
3. C.topography
4. D.soil texture
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Answer: A parasite
66.
Which of the following farm practices is not mechanized?
1. A.planting
2. B.fertilizer application
3. C.bush clearing
4. D.transplanting
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Answer: D transplanting
67.
Which of the following fishing gears can be used for total harvesting of pond?
1. A.hook and line
2. B.harpoon
3. C.basket trap
4. D.dragnet
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Answer: D dragnet
68.
Which of the following groups of animals is usually kept in game reserves?
1. A.cattle, sheep and goats
2. B.camels, donkeys and horses
3. C.chicken, duck and turkeys
4. D.lions, elephants and donkeys
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Answer: D lions, elephants and donkeys
69.
Which of the following is a friend of farmer
1. A.earthworm
2. B.aphid
3. C.grasshopper
4. D.termite
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Answer: A earthworm
70.
Which of the following is not a characteristic of metamorphic rock?
1. A.they are colourless
2. B.some occur in layers
3. C.they may contain fossils
4. D.they may be hard and massive
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Answer: C they may contain fossils
71.
Which of the following is not a method of improving rangeland?
1. A.practicing continuous grazing
2. B.routine and regular weeding
3. C.routine reseeding
4. D.regular application of fertilizers
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Answer: A practicing continuous grazing
72.
Which of the following is not a problem of forest management?
1. A.absence of adequate information on the ecosystem
2. B.inadequate support from government for the development of forest resources
3. C.planting different varieties of timber
4. D.indiscriminate destruction of forest resources by bush fire
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Answer: C planting different varieties of timber
73.
Which of the following is not a symptom of foot and mouth disease of cattle?
1. A.excessive production of saliva
2. B.sores on feet and tongue
3. C.lameness
4. D.blood stained diarrhea
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Answer: D blood stained diarrhea
74.
Which of the following is not an example of edaphic factors?
1. A.rocks
2. B.soil
3. C.topography
4. D.storm
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Answer: D storm
75.
Which of the following is not correct about Stylosanthers gracilis?
1. A.It is an animal legume
2. B.It is propagated by seeds
3. C.It is drought resistant
4. D.It produces nodules
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Answer: A It is an animal legume
76.
Which of the following is the correct order for land preparation?
1. A.land clearing → ploughing → harrowing → ridging
2. B.land clearing → harrowing → ploughing → ridging
3. C.land clearing → ploughing → ridging → harrowing
4. D.land clearing → harrowing → ridging → ploughing
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Answer: A land clearing → ploughing → harrowing → ridging
77.
Which of the following rocks is formed from shale?
1. A.marble
2. B.slate
3. C.quartzite
4. D.limestone
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Answer: B slate
78.
Which of the following sources of farm power is most versatile in West Africa?
1. A.Biogas
2. B.animal
3. C.wind
4. D.water
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Answer: B animal
79.
Which of the following surveying equipment is used for measuring angles during farm surveying?
1. A.Theodolite
2. B.Measuring tape
3. C.Gunter's chain
4. D.Abney level
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Answer: A Theodolite
80.
Which of the weeds is dispersed by wind?
1. A.pig weed (Boerhavia diffusa)
2. B.goat weed (Ageratum conizoides)
3. C.Hause thorns (Acanthospermum hispidum)
4. D.Tridax (Tridax procumbeus)
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Answer: D Tridax (Tridax procumbeus)

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