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 light of the above statements, choose the most appropriate answer from the options given below:

• A. Both Statement I and Statement II are incorrect
• B. Statement I is correct but Statement II is incorrect
• C. Statement I is incorrect but Statement II is correct
• D. Both Statement I and Statement II are correct

Hint:

Net primary productivity (NPP) is an important ecological measure that indicates the amount of energy available for consumers in an ecosystem after accounting for the energy used by producers themselves.

Answer 1

The Correct Option is D

Let's evaluate both statements: Statement I: "The primary source of energy in an ecosystem is solar energy" is correct. Solar energy is the primary energy source for most ecosystems. It is captured by plants during photosynthesis and serves as the foundation of the food chain. Statement II: "The rate of production of organic matter during photosynthesis in an ecosystem is called net primary productivity (NPP)" is also correct. NPP refers to the rate at which plants and other producers in an ecosystem create organic material after accounting for the energy used in respiration. Thus, both statements are correct.