CBSE Class 10CBSE
Account
It's free!

User


Login
Create free account


      Forgot password?
Share
Notifications

View all notifications
Books Shortlist
Your shortlist is empty

Solution - What are trophic levels? Give an example of a food chain and state the different trophic levels in it. - CBSE Class 10 - Science

Question

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

Solution 1

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

The producers form the first trophic level as they manufacture food. The primary consumers form the second trophic level, the secondary consumers form the third, and the tertiary consumers form the fourth trophic level.

In the above fig. Grass is the producer which is eaten by the grasshooper known as primary consumer. Then the grasshooper is eaten by shrew, secondary consumer and lastly shrew eaten up by owl, tertiary conusmer.

Solution 2

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

Example: Food chain operating in a grassland.

Grass → Insects → Frogs → Snakes

1. Grass → 1 st trophic level

2. Insects → 2 nd trophic level

3. Frogs → 3 rd trophic level

4. Birds → 4 th trophic level

  Is there an error in this question or solution?

APPEARS IN

 NCERT Science Textbook for Class 10 (with solutions)
Chapter 15: Our Environment
Q: 1 | Page no. 261

Video TutorialsVIEW ALL [1]

Reference Material

Solution for question: What are trophic levels? Give an example of a food chain and state the different trophic levels in it. concept: Components of Eco System - Food Chains and Webs. For the course CBSE
S