1991 - JAMB Biology Past Questions and Answers - page 5
41
Which of the following is likely to occur in a deciduous forest during the dry season?
A
New leaves are formed
B
The trees die off
C
The undergrowth increases
D
The ground becomes bare
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42
Which of these is NOT an adaptive features for arboreal life?
A
Possession of long tail
B
Possession of claws
C
Possession of teeths
D
counter shading in coat colour
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43
Which of the following diseases can be prevented by innoculation?
A
Syphilis
B
Malaria fever
C
Tuberculosis
D
Acquired Immune Deficiency Syndrom
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44
Sources of air pollutants are
A
industrial chimneys, burning fossil oils and river dam
B
sulphur dioxide, acid rain and pesticides
C
sulphur mines, vehicle exhausts and aerosols
D
sewage, smoke and old vehicle
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45
Fertilizers are lost from the soil through
A
sheet erosion and evaporation
B
leaching, underground seepages and run-off
C
sheet erosion, gully erosion and wind erosion
D
wind erosion and heavy rainfall
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46
Nitrogen- fixing micro-organisms in leguminous plants live symbiotically in the
A
root nodules
B
tap root
C
branch roots
D
root hairs
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47
A
feeding
B
attachment
C
excretion
D
respiration
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48
A
grows longer
B
becomes shorter
C
becomes the hind legs
D
remains unchanged
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49
A
1
B
2
C
3
D
4
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50
A
6
B
4
C
2
D
1
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