2008 - WAEC Biology Past Questions and Answers - page 4
31
Tertiary consumers within the web are
A
cat and lion only
B
Man and lion only
C
man and cat only
D
man, cat and lion
correct option: d
Users' Answers & Comments32
What would be the effect of taking the lion out of the web?
A
The number of organisms at each trophic level would increase
B
Man would occupy the apex of the web
C
There would be more rabbit in the web
D
The energy reaching the remaining trophic would be increase
correct option: b
Users' Answers & Comments33
Which of the following statements about the transfer of energy in the ecosystem is correct?
A
energy increases at high trophic levels
B
More organisms can be supported at higher levels
C
There are fewer organisms at top tropic levels
D
Energy is lost at each trophic level
correct option: d
Users' Answers & Comments34
Pond weeds normally lack thick layers of cuticle because
A
their system of photosynthesis is not efficient
B
there is no danger of becoming desiccated
C
their leaves are either dissected or n bon-shaped
D
there are numerous stoma a on their upper epidermis
correct option: b
Users' Answers & Comments35
Shrubs do not survive on newly weathered soils because
A
the top soil is shallow
B
drainage on such soil is poor
C
humus is absent from the soil
D
the soil tends to be sandy
correct option: a
Users' Answers & Comments36
The speed of the flow of water in a river is faster in the middle than along the banks due to
A
differences to turbidity at different parts of the river
B
the abundance of fishes and other organisms along the bank
C
reduced force of gravity in the middle portion of the river
D
resistance offered by the wall of the banks.
correct option: d
Users' Answers & Comments37
The effects of environmental degradation caused by human activities can be controlled by e following measures except
A
reclaiming the land
B
converting mining pits into fish ponds
C
resettling indigenous inhabitants
D
educating people
correct option: b
Users' Answers & Comments38
The following observations concerning succession are true except that the
A
pioneer community has fewer species
B
middle stages communities are most diverse
C
max community has the greatest number of species
D
total biomass of the community increases as succession progresses
correct option: c
Users' Answers & Comments39
A vaccine is introduced into a person‘s body to
A
destroy all disease-causing organisms in the body
B
stimulate the body to produce antibodies
C
enhance the production of red blood cells
D
isolate disease-causing pathogens from the blood.
correct option: b
Users' Answers & Comments40
Which of the following activities constitutes biological control?
A
A small bony fish transported on the back of a shark
B
Adding manure to crops in a garden
C
Tilapia feeding on the larvae and pupae of mosquito
D
A vulture feeding on the carcass of a goat
correct option: c
Users' Answers & Comments