2008 - WAEC Biology Past Questions and Answers - page 2
11
In the adult frog gaseous exchange takes the
A
buccal cavity, skin and lungs
B
buccal cavity, skin and spiracles
C
gills, skin and buccal cavity
D
tympanic membrane, lungs and gills
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12
The process of regulating the amount of water and solutes in the body fluids is called
A
osmosis
B
diffusion
C
osmoregulation
D
homeostasis
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13
The presence of glucose in the urine of a patent is an indication of malfunctioning of the
A
pancreas
B
gall bladder
C
liver
D
spleen
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14
Which of the following statements is not true about hormones?
A
Hormones are manufactured in ductless glands and poured straight into the blood stream
B
Hormones are carried by the blood plasma to the required Target organs
C
Hormonal responses are usually instant and electrical
D
Once the effects of hormones are over, they are inactivated and excreted from the body
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15
Which of the following actions is note function of adrenaline? It increases
A
body blood sugar by conversion of liver glycogen into glucose
B
muscular power and resistance to fatigue
C
the rate of heat
D
the dilation of the pupils of the eye
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16
Plant hormones include the following except
A
insulin
B
auxin
C
cytokinin
D
gibberellin
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17
The passage of nerve impulse across a synapse is facilitated by the secretion of
A
acetylcholine
B
thyroxin
C
insulin
D
progesterone
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18
The part of the brain which controls and coordinates body posture is the
A
cerebellum
B
hypothalamus
C
medulla oblongata
D
pons varolii
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19
Which of the following processes is not an example of a reflex ac ion?
A
Blinking of the eye
B
Reading
C
Beating of the heart
D
Sneezing
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20
The eyes can properly focus images of objects of various distances on the retina by a process called
A
refraction
B
reflection
C
accommodation
D
correction
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