1995 - WAEC Biology Past Questions & Answers - page 3

21
Which of the following statements is false?
A
Human sense of smell is easily fatigued
B
The skin can perceive the sensations of touch, pain, pressure and temperature
C
Taste buds and olfactory cells are active when wet as well as when dry
D
Sensory nerve endings receive stimuli and send to the central nervous system
CORRECT OPTION: a
22
The following are directly involved in transmission of sound waves to the brain except
A
eardrum
B
auditory meatus
C
auditory ossicles
D
eustachian tube
CORRECT OPTION: d
23
The term syncarpous is used to describe a flower when the carpels are
A
many and fused
B
two only
C
two and separate
D
many and free
CORRECT OPTION: a
24
Which of the following structures are characteristics of insect pollinated flowers?
A
Dull coloured flowers with no nectar
B
Very light numerous and pendulous stamen
C
Brightly coloured petals, scent nectar
D
Flowers are usually small and inconspicuous
CORRECT OPTION: c
25
Which of the following statements is not correct?
A
Shortage of food may be caused by pestilence, rinderpest and neglect of farming
B
Shortage of food may lead to competition, emigration, death and decline in the rate of reproduction
C
Over-crowding may lead to scarcity of food
D
Dispersal of seeds and fruits prevents overcrowding
CORRECT OPTION: e
26
Which of the following is an advantage of dispersal of fruits and seeds? It allows
A
fair distribution of source of food for animals
B
growth in close association with parent plant
C
even distribution of plants and reduction of intraspecific competition
D
keen competition for food
CORRECT OPTION: c
27
The series of changes that occur in a seed by which the embryo develops into a seedling is known as
A
fertilization
B
gametogenesis
C
pollination
D
germination
CORRECT OPTION: d
28
Which of the following organisms has a symbiotic relationship with green algae?
A
Amoeba
B
Paramecium
C
Hydra
D
Euglena
CORRECT OPTION: c
29
At the end of photosynthesis, the green leaf is tested for starch and not glucose, because
A
the glucose is used up immediately to provide energy for the needs of the leaf
B
the glucose formed is immediately converted to starch
C
starch is stored only in leaves
D
there are no chemicals for glucose test in leaves
CORRECT OPTION: b
30
Which of these processes removes carbon from the atmosphere?
A
Putrefaction of animals
B
Burning of fuels
C
Photosynthesis
D
Volcanic eruption
CORRECT OPTION: c
Pages: