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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.

107 questions JAMB 2572 WAEC 2099 NECO 351 CUSTOM 10

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Past Questions

107 questions

Question 1 of 20 107 total questions

Question 31

jamb 1991

The structure labelled 4 is for

Afeeding

Battachment

Cexcretion

Drespiration

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Question 32

jamb 1991

Nitrogen- fixing micro-organisms in leguminous plants live symbiotically in the

Aroot nodules

Btap root

Cbranch roots

Droot hairs

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Question 33

jamb 1991

Fertilizers are lost from the soil through

Asheet erosion and evaporation

Bleaching, underground seepages and run-off

Csheet erosion, gully erosion and wind erosion

Dwind erosion and heavy rainfall

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Question 34

jamb 1991

Sources of air pollutants are

Aindustrial chimneys, burning fossil oils and river dam

Bsulphur dioxide, acid rain and pesticides

Csulphur mines, vehicle exhausts and aerosols

Dsewage, smoke and old vehicle

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Question 35

jamb 1991

Which of the following diseases can be prevented by innoculation?

ASyphilis

BMalaria fever

CTuberculosis

DAcquired Immune Deficiency Syndrom

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Question 36

jamb 1991

Which of these is NOT an adaptive features for arboreal life?

APossession of long tail

BPossession of claws

CPossession of teeths

Dcounter shading in coat colour

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Question 37

jamb 1991

Which of the following is likely to occur in a deciduous forest during the dry season?

ANew leaves are formed

BThe trees die off

CThe undergrowth increases

DThe ground becomes bare

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Question 38

jamb 1991

A food web is more stable than a food chain because

Ait contains more organisms

Bit has greater energy source

Cit is not easy to destroy

Devery organism has an alternative source

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Question 39

jamb 1991

The above diagram represents a competitive interaction between organism in communities I and II. Which of the following statements is CORRECT?

AThe population of I was higher than II at the beginning of the experiments

BII was wiped out from the enviroment at the end of the experiments

CThe population of II was always lower than that of

DThe population of I was lower at the end of the experiment than at the beginning

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Question 40

jamb 1991

Organisms in an ecosystem are usually grouped according to their trophic level as

Acarnivores and epiphytes

Bconsumers and parasites

Cproducers and consumers

Dproducers and saprophytes

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Question 41

jamb 1991

The most important factors which influence an organism's way of life in its habitat are

Athe physicals and biotic enviroment

BFood and water availability

Ctemperature, water, light and predator-prey relationship

Dcompetition for food and spaces

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Question 42

jamb 1991

Which of the following characters is NOT sex-linked?

ARiver blindness

BBaldness

CHaemophilia

DColour blindness

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Question 43

jamb 1991

When two heterozygotes mate, the dominant trait will appear in

Athe F₁ generation only

Bthe F₂ generation only

Cboth the F₁ and F₂ generations

Dneither the F₁ nor F₂ generation

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Question 44

jamb 1991

The exchange of genes between homologous chromosomes is called

Atest cross

Bback cross

Ccrossing-over

Dmutation

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Question 45

jamb 1991

The greatest contribution to genetic studies was made by

AThomas Morgan

BGregor Mendel

CCharles Darwin

DRobert Hooke

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Question 46

jamb 1991

A dwarf plant can be stimulated to grow to normal height by the application of

Athyroxin

Bgibberellin

Cinsulin

Dkinin

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Question 47

jamb 1991

Epigeal germination can be found in

Asorghum

Bmaize

Cmillet

Dgroundnut

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Question 48

jamb 1991

Vegetation propagation is described as asexual reproduction because

Areproductive organs are not involved

Bnew individuals are not formed

Cmany new plants are produced

Dthere is no exchange of genetic materials

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Question 49

jamb 1991

A collection of achenes formed from several carpels of a flower is

Aa multiple fruit

Ban aggregate fruit

Ca shizocarp

Da simple fruit

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Question 50

jamb 1991

The function of the epididymis in mammals is the

Aexpulsion of urine

Bstorage of sperms

Ccirculation of blood

Dactivation of sperms

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