Question

Number of tropic levels in food chain are limited. give reason​

Answer 1

Answer:

In a food chain, the number of Tropic levels are limited to 4-5. This is because according to 10% law of energy transfer,only 10%of energy passes from one Tropic level to next. Thus the amount of energy decrease with successive Tropic levels. After five Tropic levels, existence with such negligible amount of energy.

Answer 2

Answer:

 In an ecosystem, the number of trophic levels is limited as they cannot be more than 3 to 4 trophic levels. This is because the "amount of energy flow" decreases with the successive trophic level.