2012 - WAEC Biology Past Questions and Answers - page 4
31
Excess carbohydrates can be stored in the muscles in the form
A
cellulose
B
glycogen
C
chitin
D
lipids
32
The bones of the legs of a six years old boy are observed to be weak and crooked. Which of the following elements
were deficient in his mother’s diet at pregnancy?
were deficient in his mother’s diet at pregnancy?
A
Sodium and iron
B
Iron and manganese
C
Calcium and phosphorus
D
Magnesium and sulphur
33
The diagram above is an illustration of an experimental setup to test the action of
yeast. What test would be used to confirm the nature of the gas given off at?
yeast. What test would be used to confirm the nature of the gas given off at?
A
Insert a glowing splint
B
Pass the gas through lime water
C
Insert a piece of litmus paper
D
Smell the gas
34
Which of the following digestive enzymes would be greatly affected if the liver fails to
produce bile?
produce bile?
A
Amylase
B
Cellulase
C
Lipase
D
rotease
35
The appropriate food to be given to the child in the
picture above is
picture above is
A
beans
B
garri
C
bread
D
avocado pear
36
Which of the following food substances will have
little or no calorific value?
little or no calorific value?
A
Proteins
B
Carbohydrates
C
Lipids
D
Water
37
A space containing a group of interactive organisms
is called
is called
A
community
B
habitat
C
ecosystem
D
population
38
The area around the earth where life activities go on is referred to as
A
biosphere
B
lithosphere
C
habitat
D
ecosystem
39
The following are abiotic components of the ecosystem except
A
bacteria
B
topography
C
water
D
wind
40
Which of the following instruments would be most appropriate in comparing the air pressure at different places in the habitat?
A
Hygrometer
B
Barometer
C
Photometer
D
Air pressure disc
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