Check sibling questions

What are trophic levels? Give an example of a food chain and state the different trophic levels in it

Answer

 

The various steps in a food chain at which the transfer of food/energy takes place are called trophic levels.

 

In a food chain, each step representing an organism forms a trophic level.

food-chain-q1-page-260---teachoo.jpg

 

In the above food chain

Grasshopper eats grass, frog eats the grasshopper and snake eats the frog

 

Thus,

  • Plants are the producers, and represents the first trophic level.
  • Grasshoppers are the primary consumers, and represent the second trophic level.
  • Frogs are the secondary consumers, and represent the third trophic level. 
  • Snakes are the tertiary consumers and represent the fourth trophic level.

 

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