1999 - JAMB Biology Past Questions and Answers - page 5

41
Which of the following characterizes the white mangrove?
A
Prop roots
B
Buttress roots
C
Breathing roots
D
Stilt roots
correct option: c
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42
If the offspring of a cross between a brown mouse (bb) and a black mouse (BB) are allowed to interbreed, how many different genotypes would result?
A
2
B
3
C
4
D
5
correct option: b
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43
The biological factor that is unique to each individual is the
A
DNA
B
eye colour
C
blood group
D
RNA
correct option: a
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44
From evolutionary standpoint , the older a fossil-bearing rocks is, the more likely it is to contain
A
aves as opposed to amphibians
B
invertebrates as opposed to vertebrates
C
angiosperms as opposed to algae
D
vertebrates as opposed to invertebrates
correct option: b
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45
The very bright colours in some types of mushroom
A
are warning that they may be poisonous
B
indicate they are very taste
C
attract potential transporters of the spores
D
perform the same function as bright colours in flowers
correct option: a
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46
The least adaptive feature of aboreal life is the
A
possession of fouur limbs
B
possession of claws
C
development of long tail
D
shading of coat colour
correct option: d
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47
Which of the following is one of Lamarck's theories?
A
Some variations are more favourable to existence in a given environment than others
B
All living organisms are constantly involved in a struggle to existence
C
The size of a given population remains fairly constant
D
New species originates through the inheritance of acquired traits
correct option: d
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48
The loud cry made by a brooding hen when a predator is around is meant to
A
alert the poultry attendants
B
attract cocks to come and fight the predator
C
advertise the boundaries of its territory to intruders
D
warn its chicks and other chickens of impending danger
correct option: d
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49
The most important environment factor which epiphytes in the rain forest compete for is
A
water
B
nutrients
C
light
D
cabinet minister
correct option: c
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50
The habitat of the cysticercus of taenia solium is
A
Alimentary canal of cattle
B
Muscles of pig
C
Alimentary canal of pig
D
Muscles of cattle
correct option: b
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