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Biology Past Questions

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Past Questions

5,032 questions

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Question 1841

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 1842

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 1843

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 1844

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 1845

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 1846

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 1847

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 1848

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 1849

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 1850

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 1851

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 1852

waec 1995

An association between two organisms in which both benefit is called

Aparasitism

Bcommensalism

Csymbiosis

DPredation

Ecompetition

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Question 1853

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

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Question 1854

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 1855

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

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Question 1856

waec 1995

Which of the following is the correct chain for the organism found in an aquatic community?

AParamecium, Phytoplankton, Prawn, Waterflea, Tilapia, Shark

BWaterflea, Paramecium, Phytoplankton, Prawn, Tilapia, Shark

CPhytoplankton, Waterflea, Paramecium, Prawn, Shark, `tilapia

DPhytoplankton, Paramecium, Waterflea, Prawn, Tilapia, Shark

EParamecium, Phytoplankton, Waterfiea, Prawn, Shark, Tilapia

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Question 1857

waec 1995

The graphs above show the results of experiments which investigated the effect of temperature and oxygen on the rate of uptake of certain ions labelled X and Y by a plant root. Use them to answer the question

Which of the temperature ranges will likely favour the plant best?

A0 -10^oC

B15.-20^oC

C30- 40^oC

D45 - 50^oC

Eabove 50^oC

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Question 1858

waec 1995

Which of the following conclusions
cannot be drawn from the graphs?

AIon is taken up more rapidly at suitable temperature

BSuitable oxygen concentration increases ion uptake

CIon uptake requires energy from aerobic respiration of sugar

DIon uptake occurs most rapidly in adequate supply of, respiratory substrate

EThe quantity of ions absorbed is inversely proportional to the quantity of carbohydrate (sugar) synthesized.

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Question 1859

waec 1995

Very low annual rainfall, sparse vegetation, high day temperatures and cold nights are the characteristics
of the biome known as

Aswamp

Btropical forest

Csouthern guinea savanna

Dafro alpine

Edesert

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Question 1860

waec 1995

Which of the following is characteristics of a swamp?

AVegetation with stratified arrangement

Bmesophytes with broad leaves

CThe ground is flooded most of the time

DPredominance of climbing plants

EMany plants with tire resistant structures

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