2011 - WAEC Biology Past Questions and Answers - page 2
11
Secondary growth is brought about by the activities of the
A
phellogen and phelloderm
B
phellogen and procambium.
C
vascular cambium and phelloderm
D
vascular cambium and phellogen
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12
A monocot root IS different from a dicot root by having
A
endodermis
B
cambium
C
wide pith
D
root hair.
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13
Which of the following statements best describes haemoglobin? It is
A
yellowish in colour
B
a red blood cell
C
an oxygen carrying pigment
D
needed for blood clotting
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14
Inhaled air is made warm and moist in the
A
epiglottis
B
nasal cavity
C
trachea
D
mouth
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15
Which of the following structures is not involve in respiration?
A
Lung books
B
Mouth
C
Stomach
D
Trachea
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16
Filtrate in the Bowman’s capsule contains vitamins because
A
only all le amount is required by the body
B
they can be reabsorbed into the blood
C
they have low molecular weight
D
most of them are fat soluble.
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17
ore sweat is produced during muscular exercise because
A
the contracting muscles produce water
B
fermentation occurs in muscles
C
the temperature of the body rises
D
the muscle fatigues
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18
Which of the following neurons may not have myelin sheath?
A
Effector cells
B
Intermediate neurons
C
Motor neurons
D
Sensory neurons
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19
Which of the following is an effector organ?
A
Tongue
B
Skin
C
Nose bridge
D
Ear glands
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20
During sexual reproduction in Paramecium, how many times does the zygote divide to produce eight nuclei?
A
1
B
2
C
3
D
4
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