Food Web


 
 
Concept Explanation
 

Food Web

Food Web:

A food chain is a linear arrangement of animals. It does not give a complete picture of the feeding relationships among the different organisms of an ecosystem because many of them eat more than one kind of food. For example, a snake does not eat only mice. It may eat insects, frogs, small birds, etc. Snakes, in turn may be eaten by hawks, eagles, peacocks, owls, etc. Thus, an organism can be a part of many food chains. A food web is a series of interconnected food chains representing the feeding relationships of the organisms within an ecosystem. Unlike a food chain, a food web has several alternative pathways for the flow of energy. In the food web of a grassland ecosystem shown in Figure, there are five food chains.

Characteristics of Food Web:

  • They are never straight as they are formed by interlinking of food chains.
  • Food web provides alternative pathways of food availability.
  • Greater alternatives available in a food web makes the ecosystem more stable.
  • Food webs help in checking the overpopulation of species.
  • Food webs help in ecosystem development.
  • Sample Questions
    (More Questions for each concept available in Login)
    Question : 1

    A relationship in which two different organisms live in close association with each other is called __________________

    Right Option : C
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    Explanation
    Question : 2

    A group of inter connected food chains is called a ____________________

    Right Option : D
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    Explanation
    Question : 3

    Organisms of a higher trophic level which feed on several types of organisms belonging to a lower trophic level constitute the   ____________________

    Right Option : A
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    Explanation
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