1989 - WAEC Biology Past Questions and Answers - page 2
11
Which of the following statements is not true of osmotic process?
A
There must be a selectively permeable membrane
B
The two solutions must be of different concentrations initially
C
t involves only the movement of water molecules
D
Equilibrium is reached when there is equal distribution of water molecules
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12
Which of the following is the correct route for the movement of materials through the kidney?
A
Glomerulus → Bowman’s capsule → Loop of Henle → Collecting tubule → Pelvis
B
Glomerulus → Loop of Henle → Collecting tubule → Bowman’s capsule → Pelvis
C
Pelvis → Bowman’s capsule → Glomerulus →Loop of Henle → Collecting tubule
D
Bowman’s capsule → Glomerulus → Loop of Henle → Collecting tubule → Pelvis
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13
Which of the following is the function of the hormone in the lslets of Langerhans?
A
is used in protein metabolism
B
is involved in sugar synthesis
C
aids the rate at which glucose is converted to glycogen
D
controls the fluid content of the body
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14
Blood in mammals transports oxygen because it contains the pigment called
A
haemoglobin
B
chlorocruorin
C
melanin
D
haemocyanin
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15
In which of the following is cilia not associated with movement or transport ot materials?
A
Fallopian tube funnel
B
Ectoplasm of paramecium
C
Lining of the mammalian trachea
D
Mammalian alimentary canal
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16
The pilaferous layers is labelled
A
I
B
II
C
III
D
IV
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17
The xylem is labelled
A
II
B
IV
C
V
D
VI
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18
The part through which manufactured sugar is transported is labelled
A
I
B
III
C
IV
D
VII
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19
The loss of water vapour through the aerial parts of the plant to the atmosphere is called
A
respiration
B
guttation
C
osmoregulation
D
transpiration
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20
The upward movement of the sap in the xylem vessel is brought about by
A
transpiration stream
B
guttation
C
capillarity
D
osmosis
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