Given below are two statements Statement I: The primary source of energy in an ecosystem is solar energy.

Question

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, choose the most appropriate answer from the options given below:

1. A. Both statement I and statement II are correct
2. B. Both statement I and statement II are incorrect
3. C. Statement I is correct but statement II is incorrect (Correct answer)
4. D. Statement I is incorrect but statement II is correct

Correct Answer

Option C — Statement I is correct but statement II is incorrect

Detailed Solution & Explanation

The correct answer is Statement I is correct but statement II is incorrect.

Key Points

• The primary source of energy in an ecosystem is solar energy — Statement I is correct.
• The rate of production of organic matter during photosynthesis is Gross primary productivity (GPP), not Net primary productivity — so Statement II is incorrect (NPP = GPP minus respiration).