TNPSC Group-I 2017 · Question 11 of 71

Assertion (A): The pyramid of grassland ecosystem is upright. Reason (R): The producers are maximum in number and tertiary consumers are least in number.

Science - Environment

A(A) and (R) are correct and (R) is the correct explanation of (A)Correct
B(A) alone is correct
C(R) alone is correct
D(A) is correct (R) is not the reason for (A)

Answer: A. (A) and (R) are correct and (R) is the correct explanation of (A)

Explanation

In a grassland ecosystem the pyramid of numbers is upright because producers are most numerous and numbers decline up the trophic levels, exactly as (R) states.

Source: TNPSC Group-I Prelims 2017 (GS1902) - Official Question Paper (scribd OCR, tick-marked answers)

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