Home Biology Ecosystem Statement Based Questions Which statements are incorrect? (i) Secondar…
Biology Ecosystem Statement Based Questions Single Correct MCQ
Published on: August 14, 2026

Which statements are incorrect?

(i) Secondary productivity is defined as the rate of formation of new organic matter by consumers.

(ii) Secondary productivity depends on the plant species inhabiting a particular area.

(iii) Primary productivity varies in different types of ecosystems.

(iv) Secondary productivity depends on a variety of environmental factors, availability of nutrients and photosynthetic capacity of plants.

(v) The annual net secondary productivity of the whole biosphere is approximately 170 billion tons of organic matter by dry weight.

A
(i) and (ii)
B
(ii) and (iii)
C
(ii), (iv) and (v)
D
None of these

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Text Solution

Verified by Experts
The correct answer is:
C

(i) is correct because secondary productivity is biomass formation by consumers.

(ii), (iv), and (v) are incorrect because these statements describe factors related to primary productivity, and 170 billion tons refers to net primary productivity, not secondary productivity.

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