Our Environment — Science STD 10 — Question

Trophic Levels:
The feeding positions in a food chain or web are called trophic levels. The different trophic levels are defined in the Table below. Examples are also given in the table. All food chains and webs have at least two or three trophic levels. Generally, there are a maximum of four trophic levels.

Trophic Level	Where It Gets Food	Example
1st Trophic Level: Producer	Makes its own food	Plants make food.
2nd Trophic Level: Primary Consumer	Consumes producers	Mice eat plant seeds.
3rd Trophic Level: Secondary Consumer	Consumes primary consumers	Snakes eat mice.
4th Trophic Level: Tertiary Consumer	Consumes secondary consumers	Hawks eat snakes.