Question

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

Answer 1

Trophic levels

1. The various steps in the food chain at which the transfer of food energy takes place are called trophic levels
2. Example: Pond chain operating in a grassland, Grass →Insects→ Frogs→ Birds.

• Grass →1 trophic level
• Insects →2 trophic level
• Frogs →3 trophic level
• Birds →4 trophic level