Question

A food web –
A. Increases the variety of food at each trophic level.
B. Delicately balances the interrelations amongst organisms.
C. Decreases the variety of food but increases the quantity of food at each trophic level.
D. Increases the variety as well as the quantity of food at each trophic level.

Answer 1

Hint:A food web is a network of food chains. The interdependence of various organisms in the food web leads to a balance in nature. This also ensures that all organisms have a very important role to play in the environment.

Complete answer: A network of food chains which are interconnected to each other is called a food web. In a food chain, each member is eaten by another organism in a set sequence. The producers, consumers, and decomposers are all considered as a part of the food web. The food web includes all the organisms. It helps in maintaining a balance between the interrelations of the different organisms.

So, the correct answer is option B.

Additional information:
The food web is a simplified illustration of the various methods of feeding that link the organisms in an ecosystem into a unified system of exchange. There are different kinds of feeding relations that can be roughly classified as –
a. Herbivory
b. Carnivory
c. Scavenging
d. Parasitism
Some of the organic matter eaten by heterotrophs, such as sugars, is used by the organisms to produce energy.
Autotrophs and heterotrophs come in all sizes. They vary from microscopic life forms to organisms weighing many tons – from cyanobacteria to giant redwoods and from viruses and Bdellovibrio to blue whales.

Note: The delicate balance between various types of life forms is the basis of the formation of the food web. Various feeding habits are observed when we study the food web of an ecosystem. Each ecosystem has its own food web.