2000 - WAEC Biology Past Questions and Answers - page 3
21
Which of the following conditions will cause a decrease in body temperature?
A
increased metabolism
B
Shivering
C
Vasoconstriction of capillaries of the skin
D
Relaxation of the erector muscles
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22
The organs constantly in touch with the liver are
A
pancreas, colon and caecum
B
duodenum and stomach
C
illeum, stomach and colon
D
stomach and gall bladder
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23
Which of the following is responsible for the increased heart beat of a boy who saw a python? increased
production of
production of
A
adrenalin
B
insulin
C
pituitrin
D
thyroxin
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24
The nerves that arise from the brain are known as
A
spinal nerves
B
sacral nerves
C
cranial nerves
D
optic nerves
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25
The neurone that relay the message of effector organs are called
A
efferent neurones
B
intermediate neurones
C
afferent neurones
D
spinal nerves
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26
Each neurone consists of the following structures' except
A
cell body
B
dendrites
C
axon
D
white matter
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27
The simplest form of nervous pathway which links receptors with effectors is known as the
A
relay neuron
B
reflex arc
C
motor nerves
D
sensory nerves
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28
Which of the following parts of the eye is sensitive to light?
A
Retina
B
Cornea
C
Choroid layer
D
Optic nerves
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29
What happens to an ovule of a flower, after fertilization? It
A
becomes a fruit
B
withers away
C
becomes a seed
D
forms the cotyledons
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30
Which of the following is not a dry indehiscent fruit?
A
Legume
B
Cypsela
C
Samara
D
Caryopsis
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