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.

50 questions JAMB 628 WAEC 2054 CUSTOM 1
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Past Questions

50 questions
Question 1 of 20 50 total questions
Question 11
waec 2018

A groundnut plant showing stunted growth with yellow or mottled leaves is likely to be infected with

Ablight
Btikka
Crosette
Danthracnose
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Question 12
waec 2018

An effective method of preventing viral diseases in crops is by

Atreating the seeds with fungicides
Bpracticing crop rotation
Cregular spraying of crops
Dplanting resistant varieties
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Question 13
waec 2018

A disadvantage of vegetative propagation is that

Aplants are true to type
Bfruits are small in size
Cplants take a long time to mature
Ddiseases are easily transferred to offspring
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Question 14
waec 2018

Hibiscus and croton are examples of

Aground covers
Bhedge plants
Clawn plants
Davenue trees
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Question 15
waec 2018

Ornamental plants are commonly used for the following purposes except

Afor exterior decorations
Bas sources of perfumes
Cprovision of shade
Das bedding materials for animals
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Question 16
waec 2018

Assuming that brown colour is dominant over black colour in cowpea, what percentage of the F1 will have brown colour , if a homozygous brown cowpea is crossed with a homozygous black cowpea?

A100%
B75%
C50%
D25%
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Question 17
waec 2018

One advantage of cross breeding is that the

Aoffspring resemble the recessive parent
Byield of the offspring may not be comparable to those of the parents
Coffspring performs better than the average of the parents
Doffspring cannot survive adverse environmental conditions
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Question 18
waec 2018

Which of the following plants is not a pasture grass?

APennisetum purpureum
BAxonopus compressus
CStylosanthes gracilis
DPanicum maximum
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Question 19
waec 2018

Thinning is a farm operation in which

Aempty spaces where seeds did not germinate are replanted
Bthe number of seedlings per stand is reduced to one or two
Cfertilizers and manures are applied to crops
Deffort is made to control pests
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Question 20
waec 2018

A groundnut variety produces a steady yield of 350kg per hectare. What will be the yield of the variety on a 10-hectare farm?

A35kg
B350kg
C3,500kg
D7,000kg
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Question 21
waec 2018

Which of the following crops is usually classified as a vegetable?

ALycopersicon esculentum
BAnanas sativa
CHevea brasiliensis
DTheobroma cacao
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Question 22
waec 2018

Which of the following statement describes an advantage of underground drainage? It

Aallows for free movement of farm machinery
Bchecks the growth of weeds
Cimproves soil texture
Dincreases organic matter content of soil
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Question 23
waec 2018

The use of inorganic fertilizer is preferable to organic manure because inorganic fertilizer

Aimproves soil structure
Breleases nutrients to the soil faster
Creduces leaching of soil nutrients
Dimproves soil water holding capacity
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Question 24
waec 2018

Which of the following practices does not replenish lost soil nutrients?

Acrop rotation
Bfallowing
CLiming
DBush burning
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Question 25
waec 2018

A beneficial effect of bush burning on the soil is the

Areduction of soil microbial activities
Bexposure of soil surface to erosion
Cdestruction of weed seeds
Dimproves soil water holding capacity
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Question 26
waec 2018

The purpose of the part labelled I in the experiment illustrated above is to

Aallow proper aggregation of soil particles
Ballow even evaporation of water
Cprevent water from escaping
Ddistribute water around the soil
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Question 27
waec 2018

The aim of the experiment illustrated above is to

Adetermine soil texture
Bascertain water content of the soil
Cexamine the structure of the soil
Ddetermine soil acidity
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Question 28
waec 2018

The structure of loam could be described as

Asingle-grained
Bblocky
Ccrumby
Dplaty
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Question 29
waec 2018

The chemical composition of soil is mostly influenced by

AClimate
BTime
CTopography
DParent material
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Question 30
waec 2018

Which of the following is an example of igneous rock?

ABasalt
BDolomite
CLimestone
DMarble
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