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CBSE Class 7 Answered

what is a food chain?explain with an example?

 

Asked by gspublicschool | 01 Mar, 2019, 10:08: AM
Expert Answer

The sequential process of eating and being eaten is called a food chain.

Grass → Grasshopper → Snake → Hawk → Fungi

  • All food chains begin with green plants or producers. Thus, the plants or producers constitute the first trophic level. Example: Grass
  • The herbivores or primary consumers that feed on plants constitute the second trophic level. Example: Grasshopper
  • The herbivores are next fed upon by the carnivores or secondary consumers. They constitute the third trophic level. Example: Snake
  • Finally, the large carnivores, also called the top carnivores or tertiary consumers, form the fourth trophic level. Example: Hawk
  • The large carnivores die and form the feed of decomposers. The decomposers feed on these dead animals and plants. Example: Fungi
  • There is a transfer of food from one organism to the other forming a chain.
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