1994 - WAEC Biology Past Questions and Answers - page 4
31
What is the theoretical probability that a normal male child will be born?
A
1\2
B
1\4
C
1\3
D
1
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32
Which of these is not part of the appendicular skeleton?
A
Clavicle
B
Vertebral column
C
Scapula
D
Femur
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33
Which of the following factors does not control population growth?
A
Food shortage
B
Emigration
C
Abundance of food
D
Predation
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34
The following conditions form the basis of competition in a habitat except
A
food
B
space
C
reproductive mate
D
light
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35
The part of the ear which equalizes air pressure on either side of the eardrum is
the
the
A
auditory meatus
B
malleus
C
Eustachian tube
D
oval window
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36
Mutation leads to evolution in that it
A
gives rise to offspring which have the same characteristics as the parents
B
kill all organism where it has occurred
C
gives rise to new individuals which differs considerably from their parents
D
always confers adaptability of the offspring
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37
The process whereby poisonous compounds are made harmless in the liver is called
A
deamination
B
glycolysis
C
dehydration
D
detoxification
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38
The deficiency of calcium in a plant may result in
A
stunted growth and poor root development
B
poor growth, leaves become orange or brown
C
stunted growth, slender stem and yellowing of leaves
D
very small leaves and yellowing of leaves
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39
Which of the following is the least safe method of birth control? Using
A
spermicide creams
B
contraceptive pills
C
barriers such as condoms
D
intrauterine device
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40
Which of the following does not imply attempt at conservation?
A
Limit on the size of nets used in fishing
B
Limit on the size of vessels to be used in fishing
C
Prohibition of hunting or fishing at a certain season
D
Prudent management of natural resources
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