Question

Given below are two statements. Statement I - The amount of energy available in an ecosystem increases at each successive trophic level. Statement II - Transfer of energy from one trophic level to the other follows 10% law. In the light of above statements, select the correct option given below:

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

Hint:

Energy decreases at each trophic level and about 10 percent is passed on.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept
Energy flows in one direction in an ecosystem and is lost as heat at each step.

Step 2: Check Statement I
Energy available decreases at each successive trophic level, so Statement I is incorrect.

Step 3: Check Statement II
Only about 10 percent of energy is passed to the next level according to the 10 percent law.
So Statement II is correct.

Final Answer:
Statement I is incorrect and Statement II is correct. \[ \boxed{\text{(D) }\text{Statement I is incorrect but statement II is correct.}} \]