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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.

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Past Questions

50 questions

Question 1 of 20 50 total questions

Question 1

jamb 1986

The main function of the structure labelled 2 is to

Aprotect the inner parts of the seed

Bnourish the embryo and the growing plant

Ckeep the inner parts moist

Dmaintain the shape if the seed

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Question 2

jamb 1986

The structure labelled 1 is the

Aplumule

Bradicle

Ccell membrane

Dseed coat

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Question 3

jamb 1986

Which of the labelled parts will develop into a new maize plant?

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Question 4

jamb 1986

Sample of different soil types are packed in glass tubes whose lower ends are plugged with cotton wool, if these tubes are suspended in a trough of water, water will rise highest after a few hours in

Asand

Bloamy

Cclay

Dhumus

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Question 5

jamb 1986

The following are methods of soil conservation EXCEPT

Acontour terracing

Bstrip cropping

Ccontour ploughing

Dmixed grazing

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Question 6

jamb 1986

A larger percentage of tropical soils tends to be acidic because they

Acontain large quantities of potash

Bcontain large quantities of lime

Close a high proportion of their organic matter to running water

Dlose lime and potash from the top soil through rain action

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Question 7

jamb 1986

The swollen shoot disease of cocoa tree is caused by a

Avirus

Bfungus

Cbacterium

Dprotozoan

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Question 8

jamb 1986

In community, bacteria and fungi are referred to as

Aproducers

Bdecomposers

Cscavengers

Dconsumers

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Question 9

jamb 1986

Which of the following ecological factors are common to both terrestrial and aquatic habitats?

ARainfall, temperature and light

BSalinity, rainfall and altitude

CTides, wind, rainfall and altitude

DpH, salinity, rainfall and humidity.

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Question 10

jamb 1986

Which of these disease CANNOT be prevented by immunization?

APoliomyelitis

BTuberculosis

CCholera

Donchocerciasis

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Question 11

jamb 1986

In an agricultural ecosystem, the biotic component consists of

Acrop, pest and beneficial insects

Bcrops, temperature and humidity

Cpests, beneficial insects and water

Dcrops, water and soil

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Question 12

jamb 1986

In an ecosystem, animals which feed directly on plants are called

Asecondary consumers

Bprimary consumers

Cproducers

Dpredators

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Question 13

jamb 1986

An instrument that can be used to demonstrate phototropism and geotropism in plants is the

Aauxanometer

Bpotometer

Cklinostat

Dphotometer

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Question 14

jamb 1986

The hormones which regulates the amount of glucose in the blood is called

Aadrenalin

Bauxin

Cinsulin

Dthyroxine

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Question 15

jamb 1986

Which of the following is an example of discontinuous variation?

Askin colouration

Bleft handedness

Cbody weight

DHeight

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Question 16

jamb 1986

If a woman who is a carrier of sickle cell trait (AS) married a man who is a sickler (SS) and they had four children, how many of them would be normal?

AThree

BTwo

COne

DNone

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Question 17

jamb 1986

Gestation in mammals is the period

Arequired for growth after birth

Bbetween the formation of the foetus and birth

Cof development from zygote to birth

Dbefore the formation of the zygote

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Question 18

jamb 1986

Nastic movement is

Aresponse to light stimulus

Bnon-directional

Cdirectional

Dresponse to internal stimulus

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Question 19

jamb 1986

Two main distinguishing features of the cervical vertebra are the presence of

Ashort neural spine and vertebraterial canal

Bprozygapophysis and cervical ribs

Clarge centrum and cervical ribs

Dvertebraterial canal and large centrum

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Question 20

jamb 1986

In the mammalian skin, melanin and keratin are contained in the

Asebaceous gland

Bsweat gland

Csubcubaneous layer

Dmalpighian layer

View Explanation & Discuss

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