2002 - WAEC Biology Past Questions & Answers - page 3

21
If the cerebellum of a person is slightly damaged, which of the following will be impaired?
A
vision
B
Walking
C
Breathing
D
Digestion
CORRECT OPTION: b
22
The structure of the ear that is responsible for balancing is the
A
semi-circular carnals
B
pinna
C
auditory nerve
D
fenestra ovalis
CORRECT OPTION: a
23
When a person moves from a darkroom into bright light, the pupil becomes
A
red
B
larger
C
white
D
smaller
CORRECT OPTION: d
24
Which of the following is not an example of entomophilous flower?
A
Hibiscus
B
Flamboyant
C
Guinea grass
D
AlIamanda
CORRECT OPTION: c
25
In flowering plants, fertilization would occur when
A
the pollen grows downwards penetrating the style
B
a pollen grain is transferred to the stigma
C
one of the nuclei inside the pollen tube fuses with the ovum
D
the nucleus of the pollen tube divides
CORRECT OPTION: c
26
After fertilization in the flowering plants, the zygote develops into the
A
plumule
B
radicle
C
cotyledon
D
embryo
CORRECT OPTION: d
27
Which of the following substances is contained in chloroplasts?
A
Starch
B
Sugar
C
Glycogen
D
Dextrin
CORRECT OPTION: d
28
The structures labelled II are
A
groundnut seeds
B
underground root nuts
C
root Tubers
D
root nodules
CORRECT OPTION: d
29
The structures labelled II are associated with
A
storage of plant nutrients
B
organic acids
C
nitrogen-fixing bacteria
D
putrefying microbes
CORRECT OPTION: c
30
Using iodine solution, Biuret test, Benedict reagents and ethanol, respectively in testing for reducing
sugars, which of the following trends of colour changes would be observed?
A
Blue → black → blue → brown → clear
B
Brown → blue → brick red → clear
C
Brown → violet → blue → clear
D
Brown → blue → violet → milky
CORRECT OPTION: c
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