NEET 2025, Biology Q57: Ecosystem
Given below are two statements:
Statement I : The primary source of energy in an ecosystem is solar energy.
Statement II : The rate of production of organic matter during photosynthesis in an ecosystem is called net primary productivity (NPP).
In the light of the above statements, chocse the most appropriate answer from the options given below:
- A
Statement I is incorrect but statement II is correct
- B
Both statement I and statement II are correct
- C
Both statement I and statement II are incorrect
- D
Statement I is correct but statement II is incorrect
Statement I: Solar energy is indeed the primary energy source for almost every ecosystem — correct.
Statement II: The total rate of organic matter production during photosynthesis is the Gross Primary Productivity (GPP), not NPP. NPP = GPP − respiratory losses by producers. So Statement II is incorrect.
Statement I correct, Statement II incorrect.
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