Environment and Ecology TNPSC Group 1 Questions

Botany & Zoology

Environment and Ecology MCQ Questions

7.
If the plant producer dies in the ecosystem, then the system is
A.
Seriously affected
B.
Cannot produce food
C.
Can have more producer
D.
Hardly affected
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ANSWER :
A. Seriously affected
8.
Urea is fromed during
A.
Kreb's cycle
B.
Citric acid cycle
C.
Ornithine cycle
D.
Nitrogen cycle
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ANSWER :
C. Ornithine cycle
9.
Air pollutants destroy the
A.
Oxygen layer
B.
Nitrogen layer
C.
Cloud layer
D.
Ozone layer
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ANSWER :
D. Ozone layer
10.
The gases which are responsible for acid rain are
A.
Nitrogen dioxide and Carbon dioxide
B.
Nitrogen dioxide and Sulphur dioxide
C.
Carbon dioxide and Sulphur dioxide
D.
Carbon dioxide,Sulphur dioxide and Nitrogen dioxide
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ANSWER :
B. Nitrogen dioxide and Sulphur dioxide
11.
Which one of the following is correctly matched?
A.
Producer - Deer
B.
Primary consumer - Leopard
C.
Secondary consumer - Grass
D.
Decomposer - Bacteria
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ANSWER :
D. Decomposer - Bacteria
12.
The total organic matter present in an ecosystem is referred as
A.
Biomass
B.
Biosphere
C.
Biome
D.
Biocoenosis
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ANSWER :
A. Biomass