Question

Write in detail of Food Web.

Answer 1

Food Web:

• A food web is a graphical description of feeding relationships among species in an ecological community, that is, of who eats whom. It is also a means of showing how energy and materials flow through a community of species as a result of these feeding relationships.
• Typically, species are connected by lines or arrows called "links", and the species are sometimes referred to as "nodes" in food web diagrams.
• A food web differs from a food chain in that the latter shows only a portion of the food web involving a simple, linear series of species (e.g., carnivores, herbivores, plants) connected by feeding links.
• A food web aims to depict a more complete picture of the feeding relationships, and can be considered as a network of food chains occurring within the community.
• All species occupying the same position within a food chain comprise a trophic level within the food web. For instance, all of the plants in the food web comprise the first or "primary producer" tropic level, all herbivores comprise the second or "primary consumer" trophic level, and carnivores that eat herbivores comprise the third or "secondary consumer" trophic level. Additional levels, in which carnivores eat other carnivores, comprise a tertiary trophic level.