1999 - WAEC Biology Past Questions & Answers - page 1

1
Which of the following organisms does not exist as a single cell?
A
Amoeba
B
Euglena
C
Volvox
D
Chlamydomonas
CORRECT OPTION: c
2
Which of the following features of Paramecium is not an advancement over Amoeba? The possession of
A
definite shape
B
cilia
C
oral groove
D
nucleus
CORRECT OPTION: d
3
Which of the following diseases results from the deficiency of insulin?
A
Cretinism
B
Goitre
C
Beri-beri
D
Diabetes
CORRECT OPTION: d
4
Root hairs absorb water from the soil by
A
diffusion
B
osmosis
C
plasmolysis
D
translocation
CORRECT OPTION: b
5
One of the similarities between algae and mosses is their possession of
A
chlorophyll
B
stem
C
leaves
D
roots
CORRECT OPTION: a
6
The vessel that carries blood from the heart to the lungs is called an artery because it
A
contains oxygenated blood
B
contains more blood than the other vessels
C
carries blood away from the heart
D
has thick inelastic wall
CORRECT OPTION: c
7
During anaerobic respiration in skeletal muscles, pyruvic acid is
A
reduced to lactic acid
B
oxidized to ethanol
C
oxidized to lactic acid
D
reduced to water
CORRECT OPTION: a
8

Use the information on the stages involved in conjugation to answer the 2 questions below


I. Transfer of one cell content into the adjacent cell ll. Formation of a conjugation tube III. Secretion of thick
wall to form a zygospore IV. Formation of a protuberance V. Germination of a filament Which of the following organisms exhibits 'the stages listed above during conjugation?
A
Chlamydomonas
B
Euglena
C
Spirogyra
D
Volvox
CORRECT OPTION: c
9

Use the information on the stages involved in conjugation to answer the 2 questions below


I. Transfer of one cell content into the adjacent cell ll. Formation of a conjugation tube III. Secretion of thick
wall to form a zygospore IV. Formation of a protuberance V. Germination of a filament Which of the following arrangements is the correct sequence of the process?
A
II, I, IV, V and III
B
IV, II, I, III and V
C
IV, I, II, V and III
D
V, II, III, IV and I
CORRECT OPTION: a
10
The teeth used for tearing and cutting are
A
canine and molars
B
premolar and incisors
C
molar and incisors
D
canine and incisors
CORRECT OPTION: d
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