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Biology Past Questions

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154 questions JAMB 2572 WAEC 2099 NECO 351 CUSTOM 10

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Past Questions

154 questions

Question 1 of 20 154 total questions

Question 51

waec 2008

A pupil accidentally "watered" a potted plant with concentrated salt solution after sometime the plant began to wilt.

The wilting of the plant is due to the fact that

Athe root hair die off and can no longer absorb water

Bthe salt solution causes faster rate of transpiration leading to the death of the plant cell

Cthe salt solution has caused water lost from the plant cell leading to loss of turgor

Dthe plant tissue has been poisoned by the salt which is absorbed by the plant

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Question 52

waec 2008

The living materials of the cell consist of

Anucleus and cytoplasm

Bcytoplasm and vacuole

Ccytoplasm and cell membrane

Dnucleus and cell membrane

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Question 53

waec 2008

Which of the following features does not necessarily place paramecium as a higher level of organisation over Amoeba?

APresence of cilia

BAbsence of pseudopodia

CPresence of micro and mega nuclei

DPresence of more than one food vacuole

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Question 54

waec 2008

In the binomial system of naming organisms, the second name is called the

Ascientific name

Bcommon name

Cgeneric name

Dspecific name

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Question 55

jamb 2008

The natural process that produces adaptive evolutionary changes is

AMutation

BGene flow

CGenetic drift

DNatural selection

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Question 56

jamb 2008

Use the diagram above to answer this question. The male inflorescence is labeled

Bii

Ciii

Div

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Question 57

jamb 2008

In the diagram, the genotypic ratio of the offspring of the cross is

A1:2

B1:2:1

C1:1:1:1

D3:1

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Question 58

jamb 2008

In the diagram, which of the four offspring of the cross will be short if T the gene for tallness is dominant to t?

Bii

Ciii

Div

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Question 59

jamb 2008

In the diagram, the population size of species II on the 20th day is

A100

B200

C300

D400

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Question 60

jamb 2008

In the diagram, if species i, ii and iii interact in a community, which of the following statement is true?

Athe population of species ii is growing at a slow rate

Bthe population of species iii has reached its carrying capacity?

Cthe population of species I has become extinct

Dthe population of species I is always higher than species ii

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Question 61

jamb 2008

In the diagram, the part labelled IV indicated that the yeast population has

Areached its maximum size

Breached senescence

Cstopped metabolizing food

Dstarted dying

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Question 62

jamb 2008

In the diagram, the part labelled I represents the

Astationary phase

Blag phase

Clog phase

Dsteady phase

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Question 63

jamb 2008

In the diagram, the illustration is a typical example of a plant pollinated by

Awind

Bman

Cinsects

Dbirds

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Question 64

jamb 2008

Use the diagram above to answer this question. The animal represented by l is a

Apoikilotherm

Bhomoiotherm

Ccarnivore

Dherbivore

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Question 65

jamb 2008

Use the diagram above to answer this question. From the graph above, it can be appropriately deduced that?

Athe body temperature in ll varies with that in l

Bthe body temperature in l is independent of external temperature

Cl and ll maintain constant body temperature

Dexternal temperatures affect the body temperature of l and ll

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Question 66

jamb 2008

Use the diagram above to answer this question.Water reabsorption takes place in

All and lll

Blll and lV

Cl and IV

Dl and lll

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Question 67

jamb 2008

Use the diagram above to answer this question.The vessel that carries blood from l to ll is the

Apulmonary artery

Bpulmonary vein

Ccarotid artery

Djugular vein

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Question 68

jamb 2008

Use the diagram above to answer this question.The type of reproduction illustrated in IV is

Asexual

Bconjugation

Cbinary fission

Dbudding

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Question 69

jamb 2008

Use the diagram above to answer this question. Which of the organisms is characterised by the possession of a chitinous exoskeleton?

Bll

Clll

DlV

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Question 70

jamb 2008

Which of the following is a major cause of variation among organisms?

AInbreeding

BBackcrossing

CSexual reproduction

DGene dominance

View Explanation & Discuss

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