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.

 

  1. Class 10
  2. Chapter 15 Class 10 - Our Environment

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.