1995 - WAEC Biology Past Questions and Answers - page 2
11
In complex food relationships in a community, the primary, secondary and tertiary consumers are referred
to as
A
symbionts
B
omnivores
C
heterotrophs
D
autotrophs
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12
The cell membrane of a cell is said to be semi-permeable because
A
it allows only large molecular substances to pass through it into the cell
B
it is actively involved in energy production in the cell
C
it actively allows all substances to pass through it by diffusion
D
it is actively selective in allowing substances pass through it
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13
The function of the part labelled I is
A
controlling water loss
B
trapping solar energy
C
absorbing water
D
storing sugar
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14
The part labelled ll is the
A
stoma
B
palisade cell
C
spongy cell
D
guard cell
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15
The structure that will be stained blue-black by iodine is labelled
A
I
B
II
C
III
D
IV
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16
In the anaerobic stage of respiration, the net ATP molecules produced per
glucose molecule
A
one
B
two
C
three
D
four
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17
Reabsorption of the metabolic products along the kidney tubules is made possible by the
A
closeness of the intestine to the kidney
B
convoluted nature of the tubules
C
presence of convoluted tubules in the medulla
D
presence of network of capillaries around the convoluted tubules
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18
Hormones are transported around the mammalian body by
A
water
B
nerves
C
blood
D
osmosis
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19
Which of the following is not a function of insulin?
A
Accelerates the rate at which glucose is converted to glycogen
B
Promotes the uptake of glucose by tissues
C
Regulates the amount of glucose in the blood
D
Accelerates the absorption of glucose at the glomerulus
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20
Which of the following is the correct route of transmission of impulses along a reflex arc?
A
Receptor → sensory neurone → synapse → intermediate neurone → synapse → motor neurone → effector
B
Receptor → motor neutron e synapse → intermediate neurone → synapse → sensory neurone effector
C
Receptor → synapse → sensory neurone → intermediate neurone → synapse → effector → motor neurone
D
Effector → motor neurone → synapse → sensory neurone → synapse → intermediate neurone → receptor
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