NEET BIOLOGY

Detailed explanation-1: -Normally, food webs consist of a number of food chains meshed together. Each food chain is a descriptive diagram including a series of arrows, each pointing from one species to another, representing the flow of food energy from one feeding group of organisms to another.

Detailed explanation-2: -Each level or link in a food chain or a food web is called a) a trophic level. A trophic level is the position that an organism occupies within the food chain or web of that particular ecosystem. Trophic levels include producers, primary consumers, secondary consumers, tertiary consumers, and decomposers.

Detailed explanation-3: -Level 1: Plants (producers) Level 2: Animals that eat plants or herbivores (primary consumers) Level 3: Animals that eat herbivores (secondary consumers, carnivores)

Detailed explanation-4: -A food web consists of all the food chains in a single ecosystem. Each living thing in an ecosystem is part of multiple food chains. Each food chain is one possible path that energy and nutrients may take as they move through the ecosystem.

Detailed explanation-5: -Two or more interconnecting food chains make up what’s known as a food web. No matter what type of natural community you’re talking about-a pine forest, a desert, or a coral reef, for example-the flow of energy almost always starts with the sun. So the sun is an important link in food chains.