2007 - JAMB Biology Past Questions and Answers - page 5
41
A
nuclear membrane
B
cell wall
C
endoplasmic recticulum
D
plasmellema
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42
The organs that will be most useful to giant African rats in finding their way in underground habitats are the
A
vibrissae
B
nostrils
C
eyes
D
tails
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43
The increasing order of the particle size in following soil type is
A
clay → sand → silt →gravel
B
silt → sand → clay → gravel
C
clay → silt → sand → gravel
D
silt → clay → sand → gravel
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44
The causative agent of bird flu is a
A
protozoan
B
virus
C
bacterium
D
fungus
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45
Which of the following is an example of parasitism
A
fungai growing on a dead tree branch
B
a squirrel living in an abondoned nest of a bird
C
mistletoe growing on an orange tree
D
cattle egrets taking ticks from the body of cattle
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46
One adaptation shown by hydrophytes in freshwater habitats is the
A
leaves reduced to spines
B
poor development of roots and xylem tissues
C
waxy cuticle on shoot surface
D
well developed roots and supporting system
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47
A crucible of 5 g m weighed 10 gm after filling with fresh soil. it is then heated in an oven at 100°c for 1 hour. After cooling in a desiccator, the weight was 8 gm. The percentage of water in the soil is
A
80%
B
60%
C
20%
D
40%
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48
The highest level of ecological organization is the
A
ecosystem
B
population
C
biosphere
D
niche
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49
The mangrove swamp in Nigeria is restricted to the
A
sahel savana
B
sudan savanna
C
guinea savanna
D
tropical rain forest
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50
A biotic factor which affects the distribution and abundance of organisms in a terrestrial habitat is
A
temperature
B
competition
C
pH
D
light
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