1993 - JAMB Biology Past Questions and Answers - page 5
41
Carbon monoxide poisons tissue by
A
constricting the blood vessels
B
killing the cells
C
combining with haemoglobin
D
rupturing the blood vessels
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42
Which of the following is an example of discontinuous variation observed in man?
A
Skin colours
B
Tongue rolling
C
Body weight
D
Height
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43
During blood transfusion, agglutination may occur when
A
contrasting antigens reacts with contrasting antibodies
B
similar antigens react with similar antibodies
C
two different antigens react with each other
D
two different antibodies react with each other
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44
A
1 heterozygous smooth : 2 homozygous smooth : 1 wrinkled
B
1 homozygous smooth : 2 heterozygous smooth : 1 wrinkled
C
2 homozygous smooth : 2 wrinkled
D
3 heterozygous smooth : 2 wrinkled
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45
Cold blooded animals are referred to as
A
poikilothermic
B
homothermic
C
polythermic
D
homeostatic
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46
Which of the following organisms has lost the pentadactyl limb structure?
A
Bat
B
Fish
C
Frog
D
Pigeon
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47
A
1->2->3->4->5
B
5->1->3->2->4
C
2->1->3->4->5
D
5->3->2->1->4
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48
A
with the lungs
B
with the external gills
C
with the internal gills
D
through the skin
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49
A
1
B
3
C
5
D
6
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50
A
1
B
4
C
5
D
6
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