1990 - WAEC Biology Past Questions and Answers - page 3
21
The mechanism by which useful materials in the glomerular filtrate are taken back into the blood is known
as
as
A
filtration
B
reabsorption
C
haemolysis
D
osmosis
correct option: b
Users' Answers & Comments22
Which of the following takes place during the process of detoxication in the liver?
A
Poisonous substances in the body are converted into harmless substances
B
Fats and oils are broken into finer particles through emulsification
C
Excess glucose in the blood are converted into glycogen and stored
D
Worn- out red blood cells are broken down
correct option: a
Users' Answers & Comments23
The cup-shaped part of the Bowman’s capsule contains
A
nephridium
B
glomerulus
C
loop of Henle
D
nephron
correct option: b
Users' Answers & Comments24
The increase in width of blood vessels in the mammalian skin at high temperatures is known as
A
vasodilation
B
sweating
C
vasoconstriction
D
shivering
correct option: a
Users' Answers & Comments25
The condition known as cretinism is caused by the deficiency of
A
adrenalin
B
vitamin A
C
insulin
D
thyroxin
correct option: d
Users' Answers & Comments26
Which of the following parts of the mammalian brain is involved in taking the decision to run rather than
walk?
walk?
A
Cerebellum
B
Medulla oblongata
C
Cranial nerves
D
Mid brain
correct option: e
Users' Answers & Comments27
The brain and spinal cord make up the
A
peripheral nervous system
B
automatic nervous system
C
central nervous-system
D
somatic nervous system
correct option: c
Users' Answers & Comments28
Which of the following is not true about auxins? They
A
are manufactured by plants
B
are used in the site of production
C
are normally present in minute quantities in the cells of plants
D
regulate growth rate of plants
correct option: b
Users' Answers & Comments29
Which of the following stimuli are not perceived through the skin of mammals?
A
Light
B
Pressure
C
Pain
D
Heat
correct option: a
Users' Answers & Comments30
Which of the following parts of the' tongue does not correspond to the taste indicated against it?
A
Tip-sweet
B
Centre salt
C
Back-sour
D
Side-sour
correct option: c
Users' Answers & Comments