Question

Energy flow from one trophic level to another in an ecosystem is

• A. (a) 5%
• B. (b) 10%
• C. (c) 15%
• D. (d) 20%

Answer 1

The correct option is B

(b) 10%

The correct option is B

Explanation of the correct option

1. In an ecosystem, the food chain represents a stepwise transfer of energy contained in the food.
2. This law was put forth by Lindeman (1942).
3. According to this law, only 10 per cent of the energy entering a particular trophic level is available for transfer to the next higher trophic level.

Explanation of the incorrect options

The other options a), c) and d) are not correct because only 10% of the energy is transferred to the next tropic level.

Final answer: Energy flow from one trophic level to another in an ecosystem is 10%.