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Biology Past Questions

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2,572 questions JAMB 2572 WAEC 2099 NECO 351 CUSTOM 10

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2,572 questions

Question 1 of 20 2,572 total questions

Question 521

jamb 2009

According to Darwin, the driving force behind evolutionary change is

Anatural selection

Bgenetic drift

Cmutation

Dgene flow

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Question 522

jamb 2009

During the dry season in the tropics, the body metabolism of some animals slow to a minimal level in a process referred to as?

Ahibernation

Baestivation

Cdormancy

Dsenescense

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Question 523

jamb 2009

The specialized pigment cells that are involved in colouration and colour change in animals?

Axanthophyll

Bchromatophores

Cchlorophyll

Dmelanin

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Question 524

jamb 2009

Which of the following animals is most adapted for water conservation?

Aearthworms

Bmammals

Cflatworms

Dinsects

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Question 525

jamb 2009

The part of a domestic fowl responsible for preventing heat loss is the?

Afiloplume

Bcontour feather

Cdown feather

Dquill

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Question 526

jamb 2009

Plants that grow in an area that is neither too wet nor too dry are

Axerophytes

Bmesophytes

Cepiphytes

Dhydrophytes

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Question 527

jamb 2009

A health condition that is known to have resulted from gene mutation is?

Atyphoid

Brabies

Csickle-cell anaemia

Dsleeping sickness

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Question 528

jamb 2009

A woman with the ability to roll her tongue (Tt) marries a man who cannot roll his tongue(tt). what is the probability of each of their children being a tongue roller?

A100%

B75%

C50%

D25%

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Question 529

jamb 2009

The nephridia in the earthworm form part of the?

Areproductive system

Brespiratory system

Ccirculatory system

Dexcretory system

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Question 530

jamb 2009

A farmer's assumption that the seed from a good harvest will produce a good yield is explained by the theory of

Aevolution

Badaptation

Cvariation

Dheredity

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Question 531

jamb 2009

A phenotypic character with intermediate forms that can be graded from one extreme to the other is referred to as?

Adiscontinuous variation

Bcontinuous variation

Ca mutant

Da genome

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Question 532

jamb 2009

The uniqueness of an individual organism in a population is accounted for by?

Aevolution

Bvariation

Cadaptation

Dmutation

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Question 533

jamb 2009

The major cause of global warming is the?

Aburning of fossil fuel

Bconstruction of dams

Cuse of electricity

Dexploration of space

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Question 534

jamb 2009

I. Onchocerciasis
II. Schistosomiasis
III.Salmonellosis
IV. Meningitis
which of the diseases listed above are associated with water?

AI and II only

BII, III and IV

CI, II and III

DII and IV

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Question 535

jamb 2009

Mass of crucible = 10g
Mass of crucible and soil before heating = 29g
Mass of a crucible and soil after heating = 18g
From the information above, determine the percentage of water in the given soil sample?

A20%

B25%

C40%

D60%

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Question 536

jamb 2009

Which of the following biomass could be characterized by very low rainfall,cold nights, hot days, and fast blooming plants?

Anorthern guinea savanna

Bsounthern guinea savanna

Ctropical desert

Dmontane forest

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Question 537

jamb 2009

In fresh water marshes and swamps, the most important abiotic factors that organisms have to adapt to is?

Anature of substratum

Bhigh salinity

Chigh temperature

Dlow pH

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Question 538

jamb 2009

A marine protozoan is likely to have no contractile vacuole mainly because the cytoplasm is

Aisotonic to sea water

Bhypotonic to sea water

Chypertonic to sea water

Dimpervious to sea water

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Question 539

jamb 2009

The association between bacteria residing in the rumen of the ruminant is?

Aparasitism

Bpredation

Csaprophytism

Dmutualism

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Question 540

jamb 2009

The most important ecological factor in a terrestrial environment is?

Arainfall

Bhumidity

Cwind

Dsoil

View Explanation & Discuss

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