Home Biology Ecosystem Structure and Function, Productivity and Decomposition What do primary producers have available to …
Biology Ecosystem Structure and Function, Productivity and Decomposition Single Correct MCQ
Published on: August 12, 2026

What do primary producers have available to convert into biomass?

A
10% of secondary productivity
B
energy used for respiration
C
gross primary productivity
D
net primary productivity

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Verified by Experts
The correct answer is:
D

Primary producers (like plants) capture solar energy and fix it into organic matter. The portion of energy that remains after subtracting respiration losses is called net primary productivity (NPP). This is the energy available for growth and biomass formation.

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