EDUCATION (CBSE/UGC NET)

Detailed explanation-1: -All of the interconnected and overlapping food chains in an ecosystem make up a food web. 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-2: -Food web is a network of food chains which become inter-connected at various trophic levels so as to form a number of feeding connections amongst different organisms of a biotic community. So, the correct answer is ‘Food web’.

Detailed explanation-3: -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.

Detailed explanation-4: -Detailed Solution Food web is a system of interlocking and independent food chains. It is a group of food chains constituting all which enables the survival of a community. It is a linear network of links in a food web. It includes all processes and infrastructure involved in feeding a population.

Detailed explanation-5: -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. When dead organic matter becomes the starting of a food chain, then it is called the detritus food chain (DFC).