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Biology Past Questions

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

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2,099 questions

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Question 471

waec 2007

Which of the following inherited conditions usually shows incomplete dominance?

ASickle cell anaemia

BHaemophilia

CTongue rolling ability

DBaldness

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Question 472

waec 2007

If a cross between a red-flowered plant and a white-flowered plant produced red-flowered plants, the result can be described as an example of

Apartial recessiveness

Bdominance

Cincomplete dominance

Dout-breeding

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Question 473

waec 2007

An albino man marries a normal woman (homozygous for skin pigmentation). What is the probability that the people could have an albino child?

A0%

B0.5%

C25%

D60%

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Question 474

waec 2007

What is the probability of producing a child of blood group O by a woman of blood group O and a man of blood group A?

A25%

B5 %

C75%

D100%

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Question 475

waec 2007

The character that is manifested in an organism in the presence of a contrasting character is known as

Agenotype

Bphenotype

Crecessive

Ddominant

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Question 476

waec 2007

Two tall plants were crossed; some of their offsprings were tall and others short the possible genotypes of the parent plants were

ATT and TT

BTT and tt

CTt and Tt

DTt and TT

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Question 477

waec 2007

Which of the following forms of variation will give a normal distribution?

ABlood groups

BTongue rolling

CBody weight

DFinger prints

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Question 478

waec 2007

Which of the following actions do not reflect the objectives of conservation of natural resources?

AProtection of the ecosystem

BSaving some species from extinction

CElimination of some wild animals to enable others survive

DPrevention of indiscriminate killing of organism

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Question 479

waec 2007

Which of the following substances is not a conservable natural resource?

AMinerals

Bfire

CSoil

DWater

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Question 480

waec 2007

Endangered species are organisms that ought to be

Ahunted

Bkilled

Cpoached

Dprotected

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Question 481

waec 2007

Which of the following bacteria lives in the root nodules of leguminous plants?

AAzotobacter

BNitrobacter

CRhizobium

DNitrosomonas

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Question 482

waec 2007

The vector of the sleeping sickness disease parasite is the

Acockroach

Bmosquito

Cblack fly

Dtse-tse fly

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Question 483

waec 2007

Which of the following infections would not respond to an antibiotic treatment?

AGonorrhoea

BMeasles

CDiarrhoea

DTuberculosis

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Question 484

waec 2007

A population which exceeds its carrying capacity and then collapses is represented graphically as a?

Abell shaped curve

Bskewed curve

Cs-shape curve

Dlinear curve

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Question 485

waec 2007

The order of primary succession by plants in a very dry habitat is?

Axerophytes → mesophytes shrub

Bmesophytes → xerophytes → shrub

Cmesophytes → shrub -> xerophytes

Dxerophytes → shrub → mesophytes

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Question 486

waec 2007

The effect of chlorofluorocarbon is

Areduction of oxygen concentration in the atmosphere

Bdepletion of the ozone layer

Cscreening of ultra violet rays

Dincrease in carbon dioxide concentration

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Question 487

waec 2007

The major pollutant around airport residential areas is

Aoil spillage

Bsoot

Cnoise

Ddust

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Question 488

waec 2007

Which of these values in kj/m2 likely represents the energy content of the producers in a habitat?

A5033

B100

C12

D10

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Question 489

waec 2007

The amount of energy passed from one trophic level to the next decreases because

Amany organisms are present at the first trophic level

Bmany organisms occur at the higher trophic level

Cmore energy is conserved at lower trophic levels

Dparts of the organisms remain unutilised at each trophic level

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Question 490

waec 2007

Wind speed is measured with

Aa maximum-minimum thermometer

Ba hygrometer

Ca wet and dry bulb hygrometer

Dan anemometer

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