Agricultural Science past questions: JAMB UTME 2025

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

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

1.
___ is a major reason why insects go to a flower.
1. A.To pollinate the flower
2. B.To suck the nectar of the flower
3. C.To fertilize the flower
4. D.To feed on the flower
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Answer: B To suck the nectar of the flower
2.
A crop mprovement practice where varieties of crops with desirable qualities are imported to a new area is
1. A.Selection
2. B.Guarantine
3. C.hybridization
4. D.introduction
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Answer: D introduction
3.
A crop which is self-fertilized is called
1. A.pure-line
2. B.mutant
3. C.Hybrid
4. D.recessive
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Answer: A pure-line
4.
A farmer who applies gypsum on his farmland intends to
1. A.reduce leaching
2. B.increase soil acidity
3. C.increase microbial activities
4. D.decrease soil acidity
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Answer: D decrease soil acidity
5.
A livestock farmer intends to improve his breeds of cattle. Which of the following should he adopt to achieve his objective?
1. A.introduction, selection and breeding
2. B.Crossing, flushing and creep feeding
3. C.introduction, adlib, feeding and flushing
4. D.cross breeding, branding and creep feeding
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Answer: A introduction, selection and breeding
6.
A process applied to a freshly harvested timber before further processing/ treatment is called
1. A.spraying
2. B.dipping
3. C.seasoning
4. D.charring
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Answer: C seasoning
7.
An unproductive animal completely removed from the rest of the stock is said to be
1. A.culled
2. B.isolated
3. C.confined
4. D.quarantined
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Answer: A culled
8.
Chlorosis observed along the veins of leaves is a characteristic symptoms for the deficiency of
1. A.magnesium
2. B.potassium
3. C.nitrogen
4. D.sulphur
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Answer: A magnesium
9.
explains the female's reproductive organs of a flower in flowering plants
1. A.Gynoecium
2. B.Monocarpous
3. C.Polycarpous
4. D.Androecium
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Answer: A Gynoecium
10.
For artificial insemination to succeed, it must be timed to fall within the oestrus cycle so that
1. A.the female will not resist service
2. B.the semen will be virile
3. C.the sperm will survive
4. D.fertilization will take place
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Answer: D fertilization will take place
11.
Genetics characteristics are passed from parents to offspring through the
1. A.zygote
2. B.chromosome
3. C.gene
4. D.centromere
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Answer: C gene
12.
How would you ensure a much faster growth rate for the chicks that are being prepared for market
1. A.by adding a lot of bone meal to their feed
2. B.by increasing the quantity of oyster shell in the feed
3. C.by increasing the cereal content of their feed
4. D.by feeding them on fish meal as a supplement to the normal feed
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Answer: D by feeding them on fish meal as a supplement to the normal feed
13.
In fish farming, what does cropping refer to?
1. A.Stocking of fish
2. B.Harvesting fish
3. C.Feeding fish
4. D.Fish storage
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Answer: B Harvesting fish
14.
Incubators are used to
1. A.Store eggs
2. B.hatch eggs
3. C.provide heat for chicks
4. D.stimulate chicks growth
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Answer: B hatch eggs
15.
is a protective covering of the soil surface intended to minimize evaporation losses.
1. A.Mulch
2. B.Contour
3. C.Drainage
4. D.Soil profile
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Answer: A Mulch
16.
Layering in crop production is advantageous because
1. A.variability arises in propagates
2. B.offspring perform better than their parents
3. C.possible failure of fertilization is avoided
4. D.pollination agents abound to ensure its success
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Answer: C possible failure of fertilization is avoided
17.
Liter is often used in poultry keeping to
1. A.control poultry disease
2. B.provide absorbent layers for the bird's droppings
3. C.provide a roost for the birds
4. D.protect the birds from predators
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Answer: B provide absorbent layers for the bird's droppings
18.
may be defined as the availability of plant nutrients in a soil to the plant growing on it.
1. A.Soil water loss
2. B.Soil fertility
3. C.Soil planktons
4. D.Soil miscarrier
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Answer: B Soil fertility
19.
Methods of harvesting wildlife include the following except
1. A.baiting
2. B.grooming
3. C.trapping
4. D.shooting
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Answer: B grooming
20.
Nitrification can best be explained as the conversion o\(f_ to_b\)y bacteria
1. A.nitrates, gaseous nitrogen
2. B.nitrates, ammonium compounds
3. C.nitrites, nitrates
4. D.nitrates, nitrites
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Answer: C nitrites, nitrates
21.
one of the common features of free-range systems of poultry-keeping is that
1. A.it allow birds to roam freely
2. B.egg production from birds is low
3. C.the birds are free from poultry diseases
4. D.they involve a high cost
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Answer: A it allow birds to roam freely
22.
Organisms which transmit a disease organism to crops are called
1. A.bacteria
2. B.vectors
3. C.hosts
4. D.parasite
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Answer: B vectors
23.
plants grown mainly for decoration are called
1. A.ornamentals
2. B.hedges
3. C.beautifiers
4. D.flowers
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Answer: A ornamentals
24.
Roughage fed to farm animals is characterized by a very high content of
1. A.fibre
2. B.protein
3. C.carbohydrate
4. D.fat
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Answer: A fibre
25.
Sleeping sickness in farm animals is usually
1. A.transmitted by trypanosomiasis
2. B.transmitted by brucellosis
3. C.caused by a trypanosome
4. D.caused by coccidiosis
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Answer: C caused by a trypanosome
26.
soil profile is the
1. A.physical composition of different soil layers
2. B.chemical composition of different layers of soil
3. C.colours exhibited by different layers of soil
4. D.arrangement of different soil particles into different layers
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Answer: D arrangement of different soil particles into different layers
27.
Streak disease of maize is caused by
1. A.fungus
2. B.virus
3. C.bacterium
4. D.nematode
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Answer: B virus
28.
Taungya farming involves the combination of
1. A.forestry and hunting
2. B.forestry and animal husbandry
3. C.crop husbandry and forestry
4. D.crop husbandry and animal husbandry
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Answer: C crop husbandry and forestry
29.
Taungya farming involves the integration o\(f_a\)nd_
1. A.animal husbandry, floriculture
2. B.crop husbandry and forestry
3. C.crop husbandry, fish farming
4. D.forestry aquaculture
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Answer: B crop husbandry and forestry
30.
The artificial supply of water to farm lands for crop production is called
1. A.irrigation
2. B.flooding
3. C.drainage
4. D.rainfall
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Answer: A irrigation
31.
The average gestation period in sow is
1. A.114 days
2. B.283 days
3. C.148 days/151 days
4. D.30 days
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Answer: A 114 days
32.
The best farm tool for transplanting of seedling is
1. A.shovel
2. B.hand trowel
3. C.hand fork
4. D.go-to-hell
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Answer: B hand trowel
33.
The best reason for having access road in a forest plantation is
1. A.control of erosion.
2. B.easy removal of weeds.
3. C.fire fighting.
4. D.fertilizer application.
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Answer: A control of erosion.
34.
The common name for Pennisetum purpureumi\(s _ g\)rass
1. A.elephant
2. B.bahama
3. C.guinea
4. D.carpet
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Answer: A elephant
35.
The dominant agent of weathering in the rain forest region of Nigeria is
1. A.Chemical
2. B.Animal
3. C.Water
4. D.Plant
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Answer: A Chemical
36.
The essential mineral element necessary for chlorophyll formation is
1. A.molybdenum
2. B.sodium
3. C.magnesium
4. D.boron
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Answer: C magnesium
37.
The factor that influences the availability of plant nutrients is
1. A.sunlight
2. B.temperature
3. C.soil pH
4. D.relative humidity
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Answer: C soil pH
38.
The first operation in establishing a fish pond is
1. A.Spill way construction
2. B.Clearing and stumping of site
3. C.Purchase of fingerlings
4. D.Dam construction
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Answer: B Clearing and stumping of site
39.
the following are cereal crops except
1. A.rice
2. B.cowpea
3. C.maize
4. D.millet
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Answer: B cowpea
40.
the hormone that is responsible for female secondary sex characteristics is called
1. A.progesterone
2. B.Testosterone
3. C.relaxin
4. D.oestrogen
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Answer: D oestrogen
41.
The most common feature of nomadic agriculture is
1. A.bush fallowing
2. B.the unsettled husbandry of animals
3. C.the growing of crops and rearing of animals
4. D.the primitive husbandry of crops
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Answer: B the unsettled husbandry of animals
42.
the most damaging effect sucking insects on crop is the
1. A.consumption of plant tissues
2. B.transmission of plant diseases
3. C.lowering of nutritive value of seeds
4. D.complete dehydration of crop plants
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Answer: B transmission of plant diseases
43.
The most important reason for grouping cattle, sheep and goats together in the study of farm animals is that they
1. A.are ruminants
2. B.eat grass
3. C.are viviparous animals
4. D.are work animals
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Answer: A are ruminants
44.
The organism which depends on another organism for food and cause harm to that organism is referred to as a
1. A.disease
2. B.predator
3. C.pest
4. D.parasite
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Answer: D parasite
45.
the physical appearance of soil as indicated by the arrangement of individual particle is known as
1. A.Capillarity
2. B.texture
3. C.structure
4. D.type
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Answer: B texture
46.
The practice of mating closely related animals with one another is referred to as
1. A.Line breeding
2. B.Inbreeding
3. C.hybridization
4. D.Cross Breeding
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Answer: B Inbreeding
47.
The process of cutting fresh or succulent grass and legume from the field and taking it to the animals in their pens is called
1. A.hay
2. B.folder
3. C.soilage
4. D.silage
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Answer: C soilage
48.
the process of removing excess water from an agricultural land is referred to as
1. A.percolation
2. B.dredging
3. C.infiltration
4. D.drainage
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Answer: D drainage
49.
The process of spot tillage in agriculture is called
1. A.maximum tillage.
2. B.erodibility tillage.
3. C.operational tillage.
4. D.minimum tillage.
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Answer: D minimum tillage.
50.
The ration usually fed to non-productive animal like old layers, dry or non-lactating animals is called
1. A.supplementary ration
2. B.maintenance ration
3. C.production ration
4. D.balance ration
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Answer: B maintenance ration
51.
The removal of an unproductive cow from the herd is known as
1. A.Castration
2. B.isolation
3. C.Dubbing
4. D.Culling
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Answer: D Culling
52.
the restriction of farm animals with rope to a peg is known as
1. A.Tagging
2. B.tattooing
3. C.Tieing
4. D.Tethering
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Answer: D Tethering
53.
The sand, silt, and clayey particles of the soil are cemented together in the soil to form natural units of compound aggregates separated by pores. This process is called
1. A.soil texture.
2. B.soil structure.
3. C.soil consistency.
4. D.soil colloids.
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Answer: B soil structure.
54.
The side effects of the various preventive and control measures of pest and diseases of crops with chemicals does NOT include
1. A.poisoning of insect
2. B.destruction of the pathogen
3. C.improved quality of farm produce
4. D.environmental pollution
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Answer: C improved quality of farm produce
55.
the small-size beetles which bore into maize grains in storage are called
1. A.nymphs
2. B.borers
3. C.caterpillars
4. D.grubs
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Answer: B borers
56.
The type of water left in the soil after excess water has been drained off, after heavy rainfall and it is available to crop plant is called
1. A.field capacity
2. B.capillary water
3. C.hygroscopic water
4. D.gravitational water
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Answer: A field capacity
57.
The vector for nagana disease in cattle is
1. A.the tsetse fly
2. B.the tick
3. C.the roundworm
4. D.lice
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Answer: A the tsetse fly
58.
What is the effect of nematode on crop plant?
1. A.leaves develop a mosaic appearance
2. B.the plant wilts
3. C.the roots grow faster
4. D.flowering is induced
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Answer: B the plant wilts
59.
What is the importance of crop rotation in sustainable agriculture?
1. A.It increases soil erosion.
2. B.It helps to manage pests and diseases and improve soil fertility.
3. C.It increases the use of chemical fertilizers.
4. D.It reduces the yield of crops.
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Answer: B It helps to manage pests and diseases and improve soil fertility.
60.
What is the main difference between organic and inorganic fertilizers?
1. A.Inorganic fertilizers are less polluting to the environment than organic fertilizers.
2. B.Organic fertilizers are more readily available than inorganic fertilizers.
3. C.Organic fertilizers provide micronutrients, while inorganic fertilizers only provide macronutrients.
4. D.Organic fertilizers are made from natural sources, while inorganic fertilizers are synthesized chemically.
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Answer: D Organic fertilizers are made from natural sources, while inorganic fertilizers are synthesized chemically.
61.
What is the main objective of integrated pest management (IPM)?
1. A.To eradicate all pests from the farm.
2. B.To minimize the use of chemical pesticides and promote biological control methods.
3. C.To rely solely on natural predators for pest control.
4. D.To use chemical pesticides as the primary method of pest control.
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Answer: B To minimize the use of chemical pesticides and promote biological control methods.
62.
What is the name of the organ directly responsible for the respiration of the young of farm animals before birth?
1. A.lungs
2. B.placenta
3. C.womb
4. D.fallopian tube
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Answer: B placenta
63.
What is the primary function of nitrogen in plant nutrition?
1. A.Leaf and stem development
2. B.Seed production
3. C.Root growth
4. D.Fruit development
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Answer: A Leaf and stem development
64.
What is the role of a good seedbed in crop production?
1. A.To promote excessive weed growth
2. B.To encourage soil compaction
3. C.To hinder root development
4. D.To provide a suitable environment for seed germination and early seedling growth
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Answer: D To provide a suitable environment for seed germination and early seedling growth
65.
What is the role of extension services in agricultural development?
1. A.To control the prices of agricultural products
2. B.To discourage farmers from diversifying their crops
3. C.To provide farmers with information and training on improved farming practices
4. D.To limit the adoption of new technologies by farmers
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Answer: C To provide farmers with information and training on improved farming practices
66.
When a farm animal dies as a result of anthrax disease, it is best to
1. A.call a veterinary officer for a post-mortem examination
2. B.cremate the carcass or bury it deeply
3. C.throw away the carcass into the bush where animals do not graze
4. D.cull all other animals on the farm
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Answer: B cremate the carcass or bury it deeply
67.
Which body part do fishes use for maneuvering in water?
1. A.Lateral lines
2. B.Barbells
3. C.Fins
4. D.Spine
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Answer: C Fins
68.
which crop can be propagated both sexually and vegetatively
1. A.millet
2. B.maize
3. C.oil palm
4. D.groundnut
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Answer: C oil palm
69.
Which of the following is a major factor influencing soil formation?
1. A.Fertilizer application
2. B.Irrigation
3. C.Climate
4. D.Crop rotation
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Answer: C Climate
70.
Which of the following is a method of soil conservation?
1. A.Terracing
2. B.Monoculture
3. C.Deforestation
4. D.Overgrazing
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Answer: A Terracing
71.
Which of the following is a primary rock-forming mineral?
1. A.Quartz
2. B.Feldspar
3. C.Basalt
4. D.Mica
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Answer: B Feldspar
72.
Which of the following is a protein concentrate?
1. A.Cassava flour
2. B.Maize meal
3. C.Wheat meal
4. D.Fish meal
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Answer: D Fish meal
73.
Which of the following is an example of a biotic factor affecting agriculture?
1. A.Temperature
2. B.rainfall
3. C.Pest and diseases
4. D.Soil pH
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Answer: C Pest and diseases
74.
which of the following is NOT a biotic factor affecting agricultural production
1. A.disease organism
2. B.predator
3. C.sun
4. D.pest
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Answer: C sun
75.
Which of the following is NOT a function of livestock in agriculture?
1. A.Plowing fields (mechanical power)
2. B.Providing meat and milk
3. C.Supplying fiber for clothing
4. D.Supplying manure for soil fertility
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Answer: A Plowing fields (mechanical power)
76.
Which of the following is not an advantage of artificial insemination?
1. A.good qualities of exotic breeds are obtained cheaply
2. B.Semen from one bull can be used to serve many cows
3. C.selected males are used extensively
4. D.infectious diseases are widely transmitted
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Answer: D infectious diseases are widely transmitted
77.
which of the following mineral element is essential for chlorophyll formulation?
1. A.sodium
2. B.molybdenum
3. C.manganese
4. D.boron
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Answer: C manganese
78.
Which of these is not an animal disease?
1. A.Newcastle disease
2. B.Dumping off
3. C.Rinderpest
4. D.Cocidiosis
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Answer: B Dumping off
79.
which weed is easily dispersed by man
1. A.Emilia sonchifolia
2. B.Boerhaavia diffusa
3. C.bougainvilla spp
4. D.Aspilia Africana
Show answerHide answer
Answer: C bougainvilla spp

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