Agricultural Science Past Questions

Study and practice Agricultural Science past questions with answers and detailed explanations. Then test your knowledge using our interactive CBT practice platform and prepare confidently for your upcoming examinations.

130 questions JAMB 628 WAEC 2054 CUSTOM 1
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Past Questions

130 questions
Question 1 of 20 130 total questions
Question 11
waec 2020

When a gene is expressed in the phenotype in a homoxygous or heterogous form, that gene is said to be?

Asegregating
Brecessive
Cregeneration
Dexploitation
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Question 12
waec 2020

The fencing and partitioning of a pastureland into paddocks is meant to?

Asuppress weeds that compete with pasture crops
Bcontrol grazing and ensure regeneration of pasture
Callow free movement of ruminants on the pasture
Dprevent lodging of the pasture plants
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Question 13
waec 2020

The following crops are fiber crops except?

Acotton
Bonion
Cjute
Dsisal
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Question 14
waec 2020

The yield of cocoa trees is not influenced by?

Apest infestation
Bfertiliser application
Cmethod of harvesting
Dmethod of soil tillage
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Question 15
waec 2020

Which of the following diseases of tomato is caused by nematode?

Afusarium wilt
Broot knot
Cleaf spot
Dleaf curl
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Question 16
waec 2020

A crop that can be propagated by stem cutting is?

Aplaintain
Bpepper
Ccassava
Dcarrot
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Question 17
waec 2020

An important reason for staking yam is to?

Aexpose the leaves to sunlight
Bprevent water logging on the farm
Cenhance the formation of leaves
Dexpose the flowers to pollination
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Question 18
waec 2020

Which of the following statements about threshing of rice are true?

I.Rice grains are separated from the panicle
II.Breakage of some grains could occur
III.The grains are polished

AI and II Only
BI and III Only
CII and III Only
DI, II and III
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Question 19
waec 2020

If the yield of cowpea is 750kg per hectare, calculate the yield of cowpea from a 20 hectare farm.

A7,500kg
B15,000kg
C22,500kg
D37,500kg
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Question 20
waec 2020

Crops which grow and mature within few weeks of their cultivation are called?

Aannual crops
Bephemeral crops
Cperennial crops
Dbiennial crops
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Question 21
waec 2020

Which of the following crops is dicotyledonous?

AZea mays
BOryza sativa
CElaeis guineensis
Dvigna unguiculata
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Question 22
waec 2020

Which of the following methods of irrigation is most efficient in terms of water conservation?

Aflood irrigation
Bfurrow irrigation
Cborder irrigation
Ddrip irrigation
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Question 23
waec 2020

Determine the ratio of nutrients in NPK 5-10-15.

A1:2:2
B1:2:3
C1:3:1
D2:1:3
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Question 24
waec 2020

The following bacteria are important in the nitrogen cycle except?

Abacillus
Bnitrobacter
Cnitrosomonas
Drhizobium
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Question 25
waec 2020

Which of the following crops can conveniently replace maize in the table?

Acassava
Bcashew
Cmango
Dmillet
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Question 26
waec 2020

The cropping system illustrated in the table is?

Amixed cropping
Bcrop rotation
Cshifting cultivation
Dland rotation
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Question 27
waec 2020

The structure of sandy soils can be described as?

Aplaty
Bcrumby
Csingle-grained
Dbloc
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Question 28
waec 2020

The deficiency of nitrogen in a maize plant can be corrected by applying?

Apotassium chloride
Bmuriate of potash
Csulphate of ammonia
Dcalcium carbonate
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Question 29
waec 2020

An oven dried soil sample of mass 8g had a mass of 1.6g after it was completely burnt. Determine the percentage of humus in the soil sample.

A6.4%
B9.6%
C20%
D80%
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Question 30
waec 2020

Water which rises above the water table in the soil and is held in fine medium pores between soil particles by surface tension is?

Ahygroscopic water
Bgravitational water
Ccapillary water
Dpercolating water
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