1990 - JAMB Biology Past Questions and Answers - page 4
31
The organ which secretes digestive enzymes as well as hormones is the
A
liver
B
salivary gland
C
pancreas
D
spleen
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32
The vilius in the small intestine is significant because it
A
increase the surface area for absorption
B
increase the surface area for digestion
C
assists in mixing digested food
D
assists in filtering undigested food
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33
If a ring of bark and phloem is removed from a stem, the
A
plant dies immediately
B
plant dies after two days
C
movement of food is not affected
D
movement of minerals is hardly affected
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34
Transpiration can be measured with a
A
photometer
B
hygrometer
C
potometer
D
barometer
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35
Excretory products responsible for the red, purple and blue colours of flowers are called
A
alkaloid
B
tannins
C
anthocyanins
D
resins
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36
Etiolation is caused by the influence of
A
minerals salt
B
water
C
carbondioxide
D
light
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37
Muscles are indirectly attached to bones by means of
A
ligaments
B
membranes
C
tendons
D
sutures
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38
During mammalian embryo development, large amounts of oestrogen and progesterone are produced in the
A
umbilical cord
B
amnion
C
placenta
D
amniotic fluid
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39
Fruits which develop without fertilization are described as
A
simple
B
pathencorpic
C
aggregate
D
compound
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40
A
parietal
B
marginal
C
axile
D
free-central
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