Name the group of organisms which form in the first trophic level of all food chains? Why are they called so? CBSE

 

The group of organisms that form the first trophic level in all food chains are producers (also called autotrophs).

Examples: Green plants, algae, and some photosynthetic bacteria.

Reason they are called producers:

• They produce their own food using sunlight (photosynthesis) or chemical energy (chemosynthesis).

• They do not depend on other organisms for food.

• They convert inorganic substances (like carbon dioxide and water) into organic matter (like glucose), providing energy for all other organisms in the food chain.

In short: producers form the base of the food chain because they create the energy-rich compounds that sustain all other trophic levels.

PRODUCERS