Autotrophic organisms include photoautotrophic organisms (including green plants and cyanobacteria) and chemoautotrophic organisms (including photosynthetic bacteria, nitrifying bacteria, sulfur bacteria, iron bacteria and so on). ), and the so-called producer is the cornerstone of the ecosystem, that is, it can convert chemical energy or light energy in the external inorganic environment into chemical energy in its own organic matter and enter the energy cycle. So, obviously, autotrophs are producers.

Type.

An organism that can obtain nutrients and energy needed for its own life activities from the process of synthesizing organic matter from inorganic substances. Green plants, such as algae, mosses, ferns and seed plants, rely on their unique chloroplasts and use solar energy to synthesize organic substances from CO2 and water to feed themselves.

Some chemically synthetic bacteria, such as nitrifying bacteria, sulfur bacteria, iron bacteria, etc. , can oxidize inorganic substances, using the energy released by oxidation to make the required nutrients.