Question

List the reasons why food chains do not tend to exceed four links

Answer 1

Food chains do not tend to exceed four links because so much energy is lost at each trophic level. Producers use energy (usually from the sun) to assemble food molecules, hence “producing food”.

Answer 2

Due to loss of energy at each tropic levels.

Step-by-step explanation:

Food chain may be defined as the sequential level of tropic levels in which the organisms eat other animals and itself being eaten by other animals. The plants acts as producers in the food chain.

The food chain is limited up to 3-4 tropic levels only. The energy is lost at each tropic level according to the 10% law of energy. The limitation of energy and its lost makes the food chain limited only up to few tropic levels. Instead of food chain, food web exist in nature.