Static Quiz 05 May 2023
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Static Quiz 05 May 2023 for UPSC Prelims
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- Question 1 of 5
1. Question
Consider the following statements regarding Niche
1. A niche is the unique functional role or place of a species in an ecosystem.
2. Two or more species can have exact identical niches.
Which of the statements given above is/are correct?CorrectCorrect Answer : A
A niche is unique for a species, which means no two species have exact identical
niches. Hence, statement 2 is incorrect.IncorrectCorrect Answer : A
A niche is unique for a species, which means no two species have exact identical
niches. Hence, statement 2 is incorrect. - Question 2 of 5
2. Question
Consider the following statements regarding Water Ecosystem
1. Lentic water system includes freshwater streams, springs, rivulets, creeks, brooks, and rivers.
2. Earth’s surface is covered by ocean with an average depth of 3,700 m and with salinity 35 ppt.
Which of the statements given above is/are correct?CorrectCorrect Answer : B
Fresh water ecosystem are classified as lotic (moving water) or lentic (still or stagnant water).
Lotic water system includes freshwater streams, springs, rivulets, creeks, brooks, and
rivers. Lentic water bodies include pools, ponds, some swamps, bogs and lakes.
Hence, statement 1 is incorrect.IncorrectCorrect Answer : B
Fresh water ecosystem are classified as lotic (moving water) or lentic (still or stagnant water).
Lotic water system includes freshwater streams, springs, rivulets, creeks, brooks, and
rivers. Lentic water bodies include pools, ponds, some swamps, bogs and lakes.
Hence, statement 1 is incorrect. - Question 3 of 5
3. Question
Consider the following statements regarding energy flow
1. The flow of energy from producer to top consumers is called energy flow, which is
unidirectional.
2. There is a gain of some energy in the form of unusable heat at each trophic level.
Which of the statements given above is/are correct?CorrectCorrect Answer : A
There is a loss of some energy in the form of unusable heat at each trophic level so
that energy level decreases from the first trophic level upwards. Hence, statement 2 is incorrect.IncorrectCorrect Answer : A
There is a loss of some energy in the form of unusable heat at each trophic level so
that energy level decreases from the first trophic level upwards. Hence, statement 2 is incorrect. - Question 4 of 5
4. Question
Consider the following statements regarding ecological pyramids
1. The pyramid consists of a number of horizontal bars depicting specific trophic levels.
2. The length of each bar represents the total number of individuals at each trophic level in an
ecosystem.
Which of the statements given above is/are correct?CorrectCorrect Answer : C
IncorrectCorrect Answer : C
- Question 5 of 5
5. Question
Consider the following statements regarding Pollutants
1. In biomagnification there is an increase in concentration of a pollutant from the environment
to the first organism in a food chain.
2. Bioaccumulation refers to the tendency of pollutants to concentrate as they move from one
trophic level to the next.
Which of the statements given above is/are correct?CorrectCorrect Answer : D
In bioaccumulation there is an increase in concentration of a pollutant from the
environment to the first organism in a food chain. Hence, statement 1 is incorrect.
Biomagnification refers to the tendency of pollutants to concentrate as they move
from one trophic level to the next. Hence, statement 2 is incorrect.IncorrectCorrect Answer : D
In bioaccumulation there is an increase in concentration of a pollutant from the
environment to the first organism in a food chain. Hence, statement 1 is incorrect.
Biomagnification refers to the tendency of pollutants to concentrate as they move
from one trophic level to the next. Hence, statement 2 is incorrect.
