Which of the following groups is absolutely essential functional component of the ecosystem?

Producers
Producers and herbivores
Producers and detritivores
Detritivores

The correct answer is: A. Producers

Producers are the organisms that make their own food using sunlight or chemicals. They are the foundation of the food chain and are essential for the survival of all other organisms.

Herbivores are the organisms that eat plants. They are an important part of the ecosystem because they help to control the population of plants.

Detritivores are the organisms that eat dead plants and animals. They are an important part of the ecosystem because they help to break down organic matter and return nutrients to the soil.

However, producers are the only organisms that can create new organic matter from inorganic matter. This makes them essential for the survival of all other organisms in the ecosystem.