Question

As energy is passed from one trophic level to another, the amount of usable energy

• A. increases
• B. decreases
• C. remains the same
• D. energy is not passed from one trophic level to another

Answer 1

The correct option is B

decreases

The correct option is B.

Explanation of the correct option:

1. The transfer of energy from one trophic level to next trophic level follows the 10 percent law known as Lindeman's law of trophic efficiency which states that the efficiency of energy transferred from one trophic level to the next higher trophic level is about 10%.
2. Rest of the energy is lost in respiration. So the energy decreases as it is transferred to subsequent trophic levels.

Final answer: As energy is passed from one trophic level to another, the amount of usable energy decreases.