2004 - WAEC Biology Past Questions and Answers - page 4
31
The break-down of food in o simple, soluble and absorbable end-products is termed
A
absorption
B
ingestion
C
nutrition
D
digestion
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32
Which of the following teeth are well-developed to form the carnassial teeth of carnivorous mammals? The
A
first lower premolar and third upper molar
B
first lower molar and third upper premolar
C
second lower premolar and first lower molar
D
first lower molar and last upper premolar
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33
Biosphere is best described as
A
all parts of the earth where life exists
B
the non-living parts of an ecosystem
C
a components of an ecosystem
D
all the members of a single species in a habitat
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34
Which of the following is not essential in the studying of the ecological factors that directly affect plants?
A
wind
B
temperature
C
herbivores
D
carnivores
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35
Conservation of soil fertility employs crop rotation because
A
crops are allowed to grow at their own rates
B
it encourages the healthy growth of plants
C
it allows utilization of soil nutrients at different levels
D
different crops grow at the same time
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36
Which of the following are consumers in these food chains?
A
maize and rabbits
B
chicken, rats and maize
C
eagle, maize and snakes
D
humans, eagle and snakes
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37
An importance of food web is that living organisms
A
use web to collect food
B
can live on their own
C
have to form a web
D
depend on one another for their existence
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38
The continuity of an ecosystem depends on constant flow
of energy and circulation of matter. However,
the amount of energy passed on from decomposers to
producers should be
of energy and circulation of matter. However,
the amount of energy passed on from decomposers to
producers should be
A
great
B
small
C
reversible
D
zero
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39
Which of the following features enables the tapeworm to live successfully in the small intestine of human?
A
Hook and suckers for strong attachment
B
Along neck for forming young proglottis
C
The absence of segmentation and appendages
D
Possession of flame cells for excretion
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40
Which of the following defines symbiosis?
A
parasites feed on dead organisms
B
both organisms benefit mutually by living together
C
Saprophytes feed on living organisms
D
organisms serve as host to parasite
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