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Biology Past Questions

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

2,572 questions JAMB 2572 WAEC 2099 NECO 351 CUSTOM 10
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Past Questions

2,572 questions
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Question 1 of 20 2,572 total questions
Question 991
jamb 1989
Which of the structure is the molar?
A1
B2
C3
D4
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Question 992
jamb 1989

The structure labelled 2 is the

Acompound eye
Bocellus
Cantenna
Dlabial palp
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Question 993
jamb 1989

Which of the labelled parts is used for feeling?

A1
B2
C3
D4
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Question 994
jamb 1989
Farmers practise crop rotation because it
Ahelps to prevent soil erosion
Ballows two crops to be planted at the same time
Chelps to conserve soil fertility
Dis an alternate to shifting cultivation
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Question 995
jamb 1989

Most irrigated lands often become unproductive in later years because of

Aloss of fertility
Bincrease in salinity
Csoil erosion
Dloss of water
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Question 996
jamb 1989

5 g of oven dried soil was heated in a furnace for 24 hours. After cooling, it weighed 4.8 g. What is the amount of humus in the soil?

A40.0g per 100 g dry soil
B4.4g per 100g dry soil
C4.0 g per 100g dry soil
D0.4g per 100g dry soil
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Question 997
jamb 1989
Which of the following is a dangerous product of coal burning?
ASulphur dioxide
BCarbon dioxide
CCarbon
DNitrogen
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Question 998
jamb 1989
which of the following disease can be caused by a bacterium?
ARingworm
BPoliomyelitis
CMalaria
DSyphilis
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Question 999
jamb 1989

which of the ways of controlling bilharzia can result in pollution?

Aclearing water weeds on which the snail feed
BTreating infected people with drugs
CPreventing contamination of water by infected urine and faeces
DApplying chemical to kill the snails
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Question 1000
jamb 1989

A physiological adaptation of plants to the problem of excessive water loss is

Areduction in the number of stomata
Breversal of the normal stomatal rhythm
Cpossession of shallow roots
Dpossession of waxy cuticles
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Question 1001
jamb 1989
Lichen is an example of
Asaprophytic organism
Ba symbiotic association
Can epiphytic plant
Da carnivorous plant
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Question 1002
jamb 1989
In an ecosystem, the LEAST efficient energy transfer link is from
Aproducers to primary consumers
Bsun to producers
Cprimary consumers to secondary consumers
Dsecondary consumers to decomposers
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Question 1003
jamb 1989

Which of the following is a sex-linked character?

ASickle-cell anaemia
BTongue rollling
CSkin colour
DColour blindness
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Question 1004
jamb 1989
If parents with blood groups AB and O produce six children
Athree of them will have group B
Btwo of them will have group A
Call the offspring will have group O
Dnone of them will have group A
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Question 1005
jamb 1989
when the two alleles present in an organism are of the same type, the genotype is described as
Aheterozygous
Bheterogamous
Chomozygous
Dhomologous
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Question 1006
jamb 1989
During cell division, the two strands of chromosomes are joined at a point called
Aspindle
Bchromatid
Ccentromere
Daster
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Question 1007
jamb 1989

The region that control most of the unconscious processes of a mammalian body is the

Acerebellum
Bcerebrum
Cspinal cord
Dmedulla oblongata
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Question 1008
jamb 1989

A fundamental similarity between nervous and hormonal system is that both

Ainvolve chemical transmission
Bhave widespread effects
Cshed chemicals into the blood stream
Devoke rapid responses
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Question 1009
jamb 1989
Fruit enlargement can be induced by spraying young ovary with
Acytokinin, abscisic acid and ethylene
Bgibberellin, ethylene and abscisic acid
Cauxin, abscisic acid and ethylene
Dauxin, cytokinin and gibberellin
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Question 1010
jamb 1989
The irreversible life process by which new protoplasm is added to increase the size and weight of an organism can be termed
Aanabolism
Bcatabolism
Cgrowth
Ddevelopment
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