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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.

2,099 questions JAMB 2572 WAEC 2099 NECO 351 CUSTOM 10

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2,099 questions

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Question 821

waec 1995

The following structures are adaptation for water conservation except

Asunken stomata

Bscales in animals

Clenticels in stems

Dspines in plants

Ethick leaves

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Question 822

waec 1995

The following structures are adaptation for water conservation except

Asunken stomata

Bscales in animals

Clenticels in stems

Dspines in plants

Ethick leaves

View Explanation & Discuss

Question 823

waec 1995

The pair of genes expressed in a heterozygous individual is described as

Aallele

Bchromatid

Cdominant gene

Dcentrosome

Echromomere

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Question 824

waec 1995

Which of the following is not a reason why an offspring looks different from its parents?

ARandom reorganisation of chromosome during gamete formation

BExistence of multiple alleles in organisms

CFormation of chasmata in chromatids during meiosis

DMutation which gives rise to new combination of gene

EMitosis of the zygote produces new combination of chromosomes

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Question 825

waec 1995

Which of the following is a definition of heredity? It is the

Anon-resemblance of closely related organisms

Btotal absence of parental traits in offspring

Cabsence of variation in organisms

Dtransfer of characteristics from parents to offspring

Ecause of infant mortality.

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Question 826

waec 1995

The statement that the environment determines which organisms survives to reproduce

Aexplains the theory of acquired characters

Bsupports Jean Lamarck’s theory of use and disuse

Csupports the idea of survival of the fittest

Dis refuted by fossil records

Eimplies that organisms modify their environment in order to survive.

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Question 827

waec 1995

An individual with blood group AB can receive blood from those in blood group(s)

AAB only B

BA and B only

CB only

DAB and O only

EA, B, AB and O

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Question 828

waec 1995

Hereditary variation is best described as

Acharacters transmitted from generation to generation

Btraits acquired from diseases

Ccharacters that show up due to social conditions

Dtraits acquired from habits and environmental conditions

Echaracters that result from physical injuries.

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Question 829

waec 1995

Which of the following is an example of discontinuous variation?

AHeight

BSize of head

CBlood group

DSkin colour

ELength of foot

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Question 830

waec 1995

Which of the following natural resources is most readily available to all organisms?

AWater

BOil

CFood

DAir

EMineral salts

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Question 831

waec 1995

The following practices are aimed at soil conservation except

Acontour ridging

Bapplication of manures

Cstrip cropping

Dbush clearing

Ecrop rotation

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Question 832

waec 1995

The following are useful measures for conserving forest except

Apreventing and controlling accidental forest fire

Bencouraging the use of charcoal for industrial and domestic purposes

Ccombating and preventing plant diseases

Dreafforestation of depleted forest

Eprotection of young growing trees

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Question 833

waec 1995

Prevention of erosion could best be carried out by

Acrop rotation and mulching

Bcontouring of slopping ground and afforestation

Cgrazing terracing and shifting cultivation

Dstrip cropping and poaching

Ebush fallowing and crop rotation.

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Question 834

waec 1995

The diagram above represent the shape of major group of bacteria
The groups staphylococci and streptobacilli are represented by

AI and II

BII and IV

CIII and VII

DIV and VII

EIV and VIII

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Question 835

waec 1995

Which of the following is not an effect of over-crowding on a population?

ADeath

BCompetition

CCommensalism

DAggression

ECannibalism

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Question 836

waec 1995

Which of the following is not an outcome of ecological succession?

AThere is a progressive change in species structure, organic matter and energy flow

BThe climax stage consists of a comparatively long lasting species composition

CThere is no dynamic equilibrium between the community and habitat in the climax stage

DCommunities occurring later in the sequence of succession are more complex

EThere are fewer dominant species in the late stages of succession.

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Question 837

waec 1995

An association between two organisms in which both benefit is called

Aparasitism

Bcommensalism

Csymbiosis

DPredation

Ecompetition

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Question 838

waec 1995

Which of these is not applicable to the circulation of water- in nature?

AWater removed from oceans are Permanently lost

BWater constantly evaporates from the seas, rivers, lakes and soil

CWater vapour rises. cools, condenses and precipitates as rain and dew

DWater is absorbed by plants and animals from their external environment

EPlants lose water by transpiration and decay

View Explanation & Discuss

Question 839

waec 1995

Which of these statements about food chain is not correct?

AAnimals in the chain are consumers

BA food chain usually begins with a green plant

CAll organisms in a food chain are animals

DLiving things are dependent on one another

EThe food chain involves energy transfer in an ecosystem

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Question 840

waec 1995

In a food chain the position occupied by an organism is called

Athe trophic level

Benergy level

Cthe feeding level

Dthe habitat level

Eniche

View Explanation & Discuss

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