Microorganisms can be divided into four types: photoautotrophic, photoheterotrophic, chemoautotrophic and chemoheterotrophic.

Among them, chemoautotrophic and Huaneng heterotrophic do not need sunlight, and they use organic and inorganic substances to synthesize substances needed in the body.

Photoautotrophic microorganisms: using light, inorganic substances and carbon dioxide;

Representative microorganisms (cyanobacteria, purple sulfur bacteria, green sulfur bacteria, algae)

Photoenergy heterotrophic microorganisms: using light, organic matter, carbon dioxide and simple organic matter;

Representative microorganisms (Rhodosporaceae bacteria, that is, purple sulfur-free bacteria)

Chemotactic autotrophic microorganisms: using inorganic substances and carbon dioxide

Representative microorganisms (nitrifying bacteria, sulfide bacteria, hydrogen bacteria, etc. )

Huaneng heterotrophic microorganism: using organic matter

Most bacteria and all eukaryotes belong to this category.

Above, I hope to help you.