Biology Past Questions

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50 questions JAMB 2572 WAEC 2099 NECO 351 CUSTOM 10
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Past Questions

50 questions
Question 1 of 20 50 total questions
Question 1
jamb 2008

The natural process that produces adaptive evolutionary changes is

AMutation
BGene flow
CGenetic drift
DNatural selection
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Question 2
jamb 2008

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

Ai
Bii
Ciii
Div
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Question 3
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 4
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?

Ai
Bii
Ciii
Div
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Question 5
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 6
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 7
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 8
jamb 2008

In the diagram, the part labelled I represents the

Astationary phase
Blag phase
Clog phase
Dsteady phase
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Question 9
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 10
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 11
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 12
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 13
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 14
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 15
jamb 2008

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

Al
Bll
Clll
DlV
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Question 16
jamb 2008

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

AInbreeding
BBackcrossing
CSexual reproduction
DGene dominance
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Question 17
jamb 2008

Which of the following is the most advanced evolutionary development in plants?

Apossession of unicellular structures
Bdevelopment of flowers
Cdispersal of spores
Ddevelopment of secondary thickening
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Question 18
jamb 2008

The ability of a chameleon to change its colour is an adaptive feature for

Aattraction
Bdefence
Cdisplay
Dattack
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Question 19
jamb 2008

A major adaptive feature of endoparasites is the

Aloss of the organ of movement
Bpresence of claws
Closs of the central nervous system
Dpresence of piercing mouthparts
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Question 20
jamb 2008

Genetically modified food products have not become universally accepted because

Athey are not tasty as others produced by conventional means
Bthey are usually costlier than others produced by conventional means
Ctheir effects on human consumers is not yet fully understood
Dthe technology can be applied only in developed countries
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