AP BIOLOGY

Detailed explanation-1: -The food chain also explains the feeding pattern or relationship between living organisms. Trophic level refers to the sequential stages in a food chain, starting with producers at the bottom, followed by primary, secondary and tertiary consumers. Every level in a food chain is known as a trophic level.

Detailed explanation-2: -A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another. In a food chain, each organism occupies a different trophic level, defined by how many energy transfers separate it from the basic input of the chain.

Detailed explanation-3: -The food chain begins with a producer, which is eaten by a primary consumer. The primary consumer may be eaten by a secondary consumer, which in turn may be consumed by a tertiary consumer. The tertiary consumers may sometimes become prey to the top predators known as the quaternary consumers.

Detailed explanation-4: -The transfer of energy between organisms is called a food chain.

Detailed explanation-5: -The energy flow is the amount of energy that moves along the food chain. This energy flow is also known as calorific flow.