Environmental Ecology UPSC Questions

General Issues on Environmental Ecology, Bio-diversity & Climate Change

Environmental Ecology MCQ Questions


13.
Fruits stored in a cold chamber exhibit longer storage life because
UPSC - 2013
A.
exposure to sunlight is prevented
B.
concentration of carbon dioxide in the environment is increased
C.
rate of respiration is decreased
D.
there is an increase in humidity
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ANSWER :
C. rate of respiration is decreased
14.
Consider the following phenomena:
1. Size of the sun at dusk
2. Colour of the sun at dawn
3. Moon being visible at dawn
4. Twinkle of stars in the sky
5. Polestar being visible in the sky
Which of the above are optical illusions?
UPSC - 2013
A.
1, 2 and 3
B.
3, 4 and 5
C.
1, 2 and 4
D.
2, 3 and 5
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ANSWER :
C. 1, 2 and 4
15.
Rainbow is produced when sunlight falls on drops of rain. Which of the following physical phenomena are responsible for this?
1. Dispersion
2. Refraction
3. Internal reflection
Select the correct answer using the codes given below:
UPSC - 2013
A.
1 and 2 only
B.
2 and 3 only
C.
1 and 3 only
D.
1, 2 and 3
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ANSWER :
D. 1, 2 and 3
16.
Many transplanted seedlings do not grow because
UPSC - 2013
A.
the new soil does not contain favourable minerals
B.
most of the root hairs grip the new soil too hard
C.
most of the root hairs are lost during transplantation
D.
leaves get damaged during transplantation
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ANSWER :
C. most of the root hairs are lost during transplantation
17.
Lichens, which are capable of initiating ecological succession even on a bare rock, are actually a symbiotic association of
UPSC - 2014
A.
algae and bacteria
B.
alage and fungi
C.
bacteria and fungi
D.
fungi and mosses
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ANSWER :
B. alage and fungi
18.
Which of the following pairs is/are correctly matched?
Spacecraft Purpose
1) Cassini-Huygens Orbiting the Venus and transmitting date to the Earth
2) Messenger Mapping and investigating the Mercury
3) Voyager 1 and 2 Exploring the outer solar system
Select the correct answer using the code given below.
UPSC - 2014
A.
1 only
B.
2 and 3 only
C.
1 and 3 only
D.
1, 2 and 3
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ANSWER :
B. 2 and 3 only