2010 - WAEC Biology Past Questions & Answers - page 1

1
Which if the following organisms is not classified as an animal?
A
Amoeba
B
Paramecium
C
Euglena
D
Obelia
CORRECT OPTION: c
2
An organism that operates at the cellular level of organization, carries out its physiological activities by
using its
A
cell membrane
B
organelles
C
small size
D
cytoplasm
CORRECT OPTION: b
3
The organelle which eliminates water from the body of a protozoan is the
A
plasma membrane
B
contractile vacuole
C
nucleus
D
cell wall
CORRECT OPTION: b
4
Which of the following cell types has the least number of mitochondria?
A
Cardiac cells of the heart
B
Cells of the cornified layer
C
Muscle cells of the bladder
D
Muscle cells of the diaphragm
CORRECT OPTION: b
5
A typical plant cell is mainly distinguished from an animal cell by the possession of
A
chloroplast and nucleus
B
cell wall and cytoplasm
C
chloroplast and cell wall
D
cell wall and mitochondrion
CORRECT OPTION: c
6
Which of the following characteristics do fungi share in common with animals?
A
Presence of digestive tract
B
Movement from one place to another
C
Storage of carbohydrates as glycogen
D
Movement of centrioles during cell division
CORRECT OPTION: c
7
Which of the following processes involves diffusion?
A
Opening and closing of stomatal pores
B
Turgidity of herbaceous plants
C
Absorption of water through the root hairs
D
Absorption of digested food into the villi
CORRECT OPTION: d
8
The mechanism of opening and closing of stomata in plants is based on
A
turgidity and diffusion
B
turgidity and flaccidity
C
osmosis and diffusion
D
diffusion and flaccidity
CORRECT OPTION: b
9
In cellular respiration energy is made available to organisms by
A
removal of a phosphate group from ADR
B
breaking off a phosphate group from ATP
C
adding a phosphate group to glucose
D
breaking off a hydrogen ion from NADPH
CORRECT OPTION: b
10
Excretion in Paramecium sp. is by diffusion because
A
its habitat is water and moist places
B
it has simple, small and few internal organs
C
it has a large surface area to volume ratio.
D
it has a large efficient meganucleus.
CORRECT OPTION: c
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