1990 - WAEC Biology Past Questions & Answers - page 1

1
Which of the following methods of reproduction is common to Paramecium and Amoeba?
A
Conjugation
B
Sexual reproduction
C
Binary fission
D
Budding
CORRECT OPTION: c
2
Which of the following structures controls the activities of the living cell?
A
Nucleus
B
Centrosome
C
Chloroplast
D
Golgi body
CORRECT OPTION: a
3
Most of the energy in the cell is produced in the
A
mitochondrion
B
lysosome
C
plastid
D
Golgi apparatus
CORRECT OPTION: a
4
The structure in the cell that controls the movement of substances in and out of the cell is the
A
cytoplasmic membrane
B
nuclear membrane
C
cytoplasm
D
protoplasm
CORRECT OPTION: a
5
Which of the following structures differentiates an animal cell from a plant cell?
A
Ribosomes
B
Cell membrane
C
Chloroplast
D
Mitochondrion
CORRECT OPTION: c
6
At the end of mitosis the number of cells produced from a parent cell is
A
four
B
six
C
eight
D
three
CORRECT OPTION: e
7
Which of the following statements is not correct of respiration?
A
Gaseous exchange occurs by diffusion
B
Oxygen combines with haemoglobin at the respiratory surface
C
Carbondioxide produced in the tissues is removed by the process of osmosis
D
There are no special organs for respiration in plants
CORRECT OPTION: c
8
At which of the following stages of mitosis do the two daughter chromosomes separate completely?
A
Early prophase
B
Telophase
C
Anaphase
D
Late prophase
CORRECT OPTION: c
9
Which of the following processes is not evident from the drawing?
A
Lining up of the chromosomes at the equatorial plate
B
Centromere attaching a pair of chromatids to a spindle fibre
C
Chromatids held by centromere
D
Absence of nuclear membrane
CORRECT OPTION: c
10
The stage of mitosis represented in the diagram is known as the
A
telophase
B
metaphase
C
anaphase
D
interphase
CORRECT OPTION: b
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