Question

Energy efficiency is the least at the top of an energy pyramid.

• A. True
• B. False

Answer 1

The correct option is A

True

Total efficiency at any level of consumption is the product of all the converters up to that level. The energy efficiency at each trophic level is $\frac{1}{10}$th of the trophic level below it. Since the energy decreases as it moves levels up a pyramid it is found to be the least at the tip or at the level of tertiary consumers.