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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.

50 questions JAMB 2572 WAEC 2099 NECO 351 CUSTOM 10
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Past Questions

50 questions
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Question 1 of 20 50 total questions
Question 1
jamb 1993
After circulation in the lungs, the blood returns to the left auricle through
A1
B4
C5
D6
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Question 2
jamb 1993
Blood is pumped into the right ventricle by the contraction of the auricle wall through
A1
B3
C5
D6
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Question 3
jamb 1993
Stage 3 breathes
Awith the lungs
Bwith the external gills
Cwith the internal gills
Dthrough the skin
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Question 4
jamb 1993

Which of the following is the correct order of the developmental stages?

A1->2->3->4->5
B5->1->3->2->4
C2->1->3->4->5
D5->3->2->1->4
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Question 5
jamb 1993

Which of the following organisms has lost the pentadactyl limb structure?

ABat
BFish
CFrog
DPigeon
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Question 6
jamb 1993
Cold blooded animals are referred to as
Apoikilothermic
Bhomothermic
Cpolythermic
Dhomeostatic
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Question 7
jamb 1993

In the illustration above, the genotypes of the offsprings are

A1 heterozygous smooth : 2 homozygous smooth : 1 wrinkled
B1 homozygous smooth : 2 heterozygous smooth : 1 wrinkled
C2 homozygous smooth : 2 wrinkled
D3 heterozygous smooth : 2 wrinkled
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Question 8
jamb 1993

During blood transfusion, agglutination may occur when

Acontrasting antigens reacts with contrasting antibodies
Bsimilar antigens react with similar antibodies
Ctwo different antigens react with each other
Dtwo different antibodies react with each other
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Question 9
jamb 1993
Which of the following is an example of discontinuous variation observed in man?
ASkin colours
BTongue rolling
CBody weight
DHeight
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Question 10
jamb 1993
Carbon monoxide poisons tissue by
Aconstricting the blood vessels
Bkilling the cells
Ccombining with haemoglobin
Drupturing the blood vessels
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Question 11
jamb 1993

What ecological condition favours the breeding of black flies?

AFresh water habitat
BWater in ponds and swamp
CWater in small containers
DFast flowing streams
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Question 12
jamb 1993
Soil fertility can be conserved and renewed by
Ayearly monocropping
Bcrop rotation and cover crops
Cbush burning to remove unwanted debris
Davoiding artificial manures
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Question 13
jamb 1993
Which group of plants would be the first colonizers in an ecological succession changing rocks to soil?
AMosses
BFerns
CLichens
DGrasses
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Question 14
jamb 1993
Plants adapted for life in salty marsh are called
Ahydrophytes
Bxerophytes
Chalophytes
Depiphytes
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Question 15
jamb 1993
Which of the following instruments is NOT used in measuring abiotic factors in any habitat?
AMicroscopic
BThermometer
CHygrometer
DWind vane
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Question 16
jamb 1993

Two organisms of different species, living in close association but not dependent on each other are referred to as

Aparasites
Bcommensals
Csymbionts
Dautotrophs
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Question 17
jamb 1993
At which trophic level would the highest accumulation of a non-biodegradable substance occur?
APrimary producers
BTertiary consumers
CPrimary consumers
DSecondary consumers
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Question 18
jamb 1993
The most important physical factor which affects an organism living in the intertidal zone of the seashore is
ApH
Bsalinity
Cwave action
Dtemperature
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Question 19
jamb 1993
Important abiotic factors which affects all plants and animals in the habitat are
Atemperature and turbidity
Brainfall and relative humididty
Csalinity and wind direction
Dtemperature and rainfall
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Question 20
jamb 1993
What is the term used to describe the sum total of biotic and abiotic factors in the environment of the organism?
AHabitat
BBiome
CEcosystem
DEcological niche
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