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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 941

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

View Explanation & Discuss

Question 942

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 943

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 944

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 945

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 946

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 947

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 948

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 949

jamb 1991

Which of the following characters is NOT sex-linked?

ARiver blindness

BBaldness

CHaemophilia

DColour blindness

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Question 950

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 951

jamb 1991

The exchange of genes between homologous chromosomes is called

Atest cross

Bback cross

Ccrossing-over

Dmutation

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Question 952

jamb 1991

The greatest contribution to genetic studies was made by

AThomas Morgan

BGregor Mendel

CCharles Darwin

DRobert Hooke

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Question 953

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 954

jamb 1991

Epigeal germination can be found in

Asorghum

Bmaize

Cmillet

Dgroundnut

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Question 955

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

View Explanation & Discuss

Question 956

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 957

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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Question 958

jamb 1991

Which of the following vertebrae lacks a centrum?

AAtlas

BAxis

CThoracic

DLumbar

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Question 959

jamb 1991

The movement of the whole organism to an external stimulus is termed

Atropism

Ba taxis

Ca nastic movement

Da phototropic movement

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Question 960

jamb 1991

Which of the following is a plant excretory product?

AOil

BCytokinin

CResin

DAmino acids

View Explanation & Discuss

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