Question

Paheli wrote a food chain in the following way:
Frog → Eagle → Insects → Grass → Snake
The chain is not in the correct order. Help her to write the food chain correctly. [NCERT Exemplar]

Answer 1

Answer:

Grass insects frog snake Eagle

Answer 2

Answer:

Grass →insects →frog → snake → eagle

Explanation:

frog →eagle →insects → grass →snake

This is not the correct sequence of food chains in the ecosystem. Grass that is the main source of food and energy being an autotroph should be at the first step of the food chain. Since it proves nutrition to the organisms that can not prepare their own food like insects. Similarly, the eagle is the topmost carnivore. Hence it should be placed at the end of the food chain. So the correct sequence of the food chain is    

Grass →insects →frog → snake → eagle