First slide

Energy Flow

Question

The fraction of energy lost when an organism proceeds from one trophic level to the next trophic level is

Easy

A

10 percent
B

20 percent
C

30 percent
D

90 percent

Solution

As per the ten percent energy transfer law introduced by Lindeman-'During the transfer of energy from organic food from one trophic level to the next, only about ten percent of the energy from organic matter is stored as flesh.' In a typical food chain, only ten percent of the energy is passed to the next consumer in the unidirectional manner and 90% is lost to the environment as heat. In a typical food chain, the apex predator receives the least amount of energy and hence, a single food chain typically does not have more than 4 levels.

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