AP BIOLOGY

Detailed explanation-1: -As the energy goes one level up, the food chain also moves up. Each level in the food chain is called a trophic level. The different trophic levels are Primary producers, primary consumers, secondary consumers, tertiary consumers and quaternary consumers.

Detailed explanation-2: -Each step along a food chain is known as a trophic level or feeding level, and every organism can be categorized by its trophic level. The most basic trophic level is producers-plants such as underwater bay grasses and free-floating algae that make their own food through photosynthesis.

Detailed explanation-3: -Organisms in food webs are grouped into categories called trophic levels. Roughly speaking, these levels are divided into producers (first trophic level), consumers, and decomposers (last trophic level).

Detailed explanation-4: -A food chain outlines who eats whom. A food web is all of the food chains in an ecosystem. Each organism in an ecosystem occupies a specific trophic level or position in the food chain or web. Producers, who make their own food using photosynthesis or chemosynthesis, make up the bottom of the trophic pyramid.