2007 - WAEC Biology Past Questions & Answers - page 1

1
A change in the environment of an organism is termed
A
sensitivity
B
impulse
C
response
D
stimulus
CORRECT OPTION: d
2
Organisms that interbreed to produce fertile offspring belong to the same
A
class
B
family
C
species
D
order
CORRECT OPTION: c
3
The transfer of ripe pollen grains from the anther to the stigma of the same flower is termed
A
fertilization
B
self-pollination
C
reproduction
D
conjugation
CORRECT OPTION: b
4
The hereditary material in a living organism is located inside the
A
protein wall
B
cytoplasm
C
nucleus
D
lysosome
CORRECT OPTION: c
5
Respiration is an essential life process providing the living cells with
A
oxygen
B
sugars
C
energy
D
carbon dioxide
CORRECT OPTION: c
6
The organelle involved in the transport of substances within a cell is
A
Golgi body
B
endoplasmic reticulum
C
ribosome
D
mitochondrion
CORRECT OPTION: a
7
Which of the following processes takes place when a plant cell is put in a hypotonic solution?
A
Water moves into the cell and the cell bursts
B
Water leaves the cell and the cell becomes flabby
C
Water moves into the cell and the cell becomes turgid
D
The cell becomes plasmolysed
CORRECT OPTION: c
8
The dominant stage in the life cycle of a fern is the
A
antheridium
B
gametophyte
C
prothallus
D
sporophyte
CORRECT OPTION: d
9
Yeast is added to the dough during the preparation of bread because it produces
A
ethanol
B
heat
C
carbon dioxide
D
carbohydrate
CORRECT OPTION: c
10
Growth includes the following processes except
A
differentiation
B
enlargement
C
mitosis
D
meiosis
CORRECT OPTION: d
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