2007 - WAEC Biology Past Questions and Answers - page 5
41
Which of these values in kj/m2 likely represents the energy content of the producers in a habitat?
A
5033
B
100
C
12
D
10
correct option: a
Users' Answers & Comments42
The major pollutant around airport residential areas is
A
oil spillage
B
soot
C
noise
D
dust
correct option: c
Users' Answers & Comments43
The effect of chlorofluorocarbon is
A
reduction of oxygen concentration in the atmosphere
B
depletion of the ozone layer
C
screening of ultra violet rays
D
increase in carbon dioxide concentration
correct option: b
Users' Answers & Comments44
The order of primary succession by plants in a very dry habitat is
A
xerophytes → mesophytes shrub
B
mesophytes → xerophytes → shrub
C
mesophytes → shrub -> xerophytes
D
xerophytes → shrub → mesophytes
correct option: a
Users' Answers & Comments45
A population which exceeds its carrying capacity and then collapses is represented graphically as a
A
bell shaped curve
B
skewed curve
C
s-shape curve
D
linear curve
correct option: d
Users' Answers & Comments46
Which of the following infections would not respond to an antibiotic treatment?
A
Gonorrhoea
B
Measles
C
Diarrhoea
D
Tuberculosis
correct option: c
Users' Answers & Comments47
The vector of the sleeping sickness disease parasite is the
A
cockroach
B
mosquito
C
black fly
D
tse-tse fly
correct option: d
Users' Answers & Comments48
Which of the following bacteria lives in the root nodules of leguminous plants?
A
Azotobacter
B
Nitrobacter
C
Rhizobium
D
Nitrosomonas
correct option: c
Users' Answers & Comments49
Endangered species are organisms that ought to be
A
hunted
B
killed
C
poached
D
protected
correct option: d
Users' Answers & Comments50
Which of the following substances is not a conservable natural resource?
A
Minerals
B
Air
C
Soil
D
Water
correct option: b
Users' Answers & Comments