2001 - WAEC Biology Past Questions & Answers - page 1

1
Which of the following indicates that Euglena is plant?
A
Conspicuous 'eye' spot
B
Presence of gullet
C
Limited movement
D
Presence of starch grain
CORRECT OPTION: d
2
Which of the following is a tissue?
A
Volvox
B
Chlamydomonas
C
Epidermis
D
Paramecium
CORRECT OPTION: c
3
The structure that produces ATP is labelled
A
VII
B
V
C
VI
D
I
CORRECT OPTION: a
4
The structure labelled V is the
A
cell wall
B
nucleus
C
endoplasmic reticullum
D
mitochondrion
CORRECT OPTION: c
5
The major function of the cell membrane is that it
A
delimits the cytoplasm
B
synthesizes protein
C
breaks down worn-out organelles
D
is the site for photosynthesis
CORRECT OPTION: a
6
Carbohydrates are stored in the animal cell in the form of
A
starch
B
glycogen
C
plastid
D
maltose
CORRECT OPTION: b
7
A piece of yam weighing 1.0 gm was put into some salt solution. After 3 hours, it was removed and weighed.
The recorded weight was 1.2gms. This simple experiment demonstrates that the
A
salt solution is more concentrated than the cell sap of the yam.
B
cell sap of the yam is more concentrated than the salt - solution
C
salt solution has the same concentration as the cell sap of the yam.
D
the yam lost some water molecules to the salt solution.
CORRECT OPTION: b
8
A major reason why the red blood cells can survive in the blood is that the
A
blood plasma and the red blood cells are isotonic
B
red blood cells are hypotonic to the plasma
C
the red blood cells are hypertonic to the blood plasma
D
the red blood cells receive digested nutrients
CORRECT OPTION: a
9
Which of the following phenomena affects plants growth in an alkaline soil?
A
Excessive plasmolysis
B
Excessive transpiration
C
Excessive sunlight
D
Poor drainage
CORRECT OPTION: d
10
A red blood cell haemolyses when placed in a hypotonic solution because
A
it contains haemoglobin
B
the cytoplasm is less dense
C
the cell lacks a wall
D
its pigment has a high affinity for water
CORRECT OPTION: b
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