Question

Consider the following food chain:
Grass \( \rightarrow \) Grasshopper \( \rightarrow \) Frog \( \rightarrow \) Snake \( \rightarrow \) Eagle
If the amount of energy available at third trophic level is 50 kJ, the available energy at the producer level was:

• A. 0.5 kJ
• B. 5 kJ
• C. 500 kJ
• D. 5000 kJ

Hint:

Energy decreases at each trophic level of the food chain due to inefficiency in energy transfer.

Answer 1

The Correct Option is D

In an energy pyramid, approximately 10% of energy moves to the next level.
- If the third trophic level (snake) has 50 kJ, the second level (frog) has 500 kJ (10 times more).
- The producer level (grass) has 10 times more energy than the second level, resulting in 5000 kJ.
Therefore, the answer is (D) 5000 kJ.