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Quiz 2
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Total Earth’s surface covered by water is
0%
75%
0%
60%
0%
85%
0%
50%
Explanation
75%
Biotic component of the biosphere is not constituted by
0%
producers
0%
consumers
0%
decomposer
0%
air
Explanation
air
An increase in carbon dioxide content in the atmosphere would not cause
0%
more heat to be retained by the environment
0%
increase in photosynthesis in plants
0%
global warming
0%
abundance of desert plants
Explanation
abundance of desert plants
Oxygen is returned to the atmosphere mainly by
0%
burning of fossil fuel
0%
respiration
0%
photosynthesis
0%
fungi
Explanation
photosynthesis
Low visibility during cold weather is due to
0%
formation of fossil fuel
0%
unbumt carbon particles or hydrocarbons suspended in air
0%
lack of adequate power supply
0%
none of these
Explanation
unbumt carbon particles or hydrocarbons suspended in air
Growth of lichens on barren rocks is followed by the growth of
0%
moss
0%
ferns
0%
gymnosperms
0%
algae
Explanation
moss
Marked temperature changes in an aquatic environment can affect
0%
breeding of animals
0%
more growth of aquatic plants
0%
process of digestion in animals
0%
availability of nutrients.
Explanation
breeding of animals
Soil erosion can be prevented by
0%
raising forests
0%
deforestation
0%
excessive use of fertiliser
0%
overgrazing by animals
Explanation
raising forests
What happens when rain falls on soil without vegetational cover?
0%
Rain water percolates in soil efficiently
0%
Rain water causes loss of surface soil
0%
Rain water leads to fertility of the soil
0%
Rain water does not cause any change in soil
Explanation
Rain water causes loss of surface soil
Oxygen is harmful for
0%
ferns
0%
nitrogen fixing bacteria
0%
chara
0%
mango tree
Explanation
nitrogen fixing bacteria
Soil erosion can be prevented by
0%
High speed wind
0%
overgrazing by animals
0%
excessive use of fertilizer
0%
raising forests
which of the below microorganism is not used in Nitrogen fixation?
0%
Rihzobium
0%
Azotobactor
0%
Blue gree algae
0%
Nitrosomonas
Ozone layer protect us from
0%
Gamma Rays
0%
UV rays
0%
X rays
0%
None of these
A zone where life forms exits is called
0%
Atnosphere
0%
Lithopshere
0%
Biosphere
0%
None of these
Biotic component of biosphere is not constituted by
0%
producers
0%
wate
0%
consumers
0%
decomposer
Match the column
0%
p -> iv, q->i, r ->iii, s-> ii
0%
p -> iii, q->i, r ->ii, s-> iv
0%
p -> iv, q->ii, r ->i, s-> iii
0%
p -> iv, q->i, r ->ii, s-> iii
Total earth’s surface covered by water is
0%
50%
0%
85%
0%
65%
0%
75%
Match the column
0%
p -> ii, q-> i, r -> iii
0%
p -> ii, q-> iii, r -> i
0%
p -> i, q-> iii, r -> ii
0%
p -> iii, q-> ii, r -> i
Choose the correct sequences
0%
$CO_2$ in atmosphere -> decomposers -> organic carbon in animals -> organic carbon in plants
0%
$CO_2$ in atmosphere -> organic carbon in plants -> organic carbon in animals -> inorganic carbon in soil
0%
Inorganic carbonates in water -> organic carbon in plants -> organic carbon in animals -> scavengers
0%
Organic carbon in animals -> decomposers -> $CO_2$ in atmosphere -> organic carbon in plants
Which of these is not inexhaustible natural resource?
0%
Solar energy
0%
Air
0%
Water
0%
Soil
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