Examples of autotrophic organisms include plants, algae, and certain bacteria. Plants and algae perform photosynthesis, utilizing sunlight to convert carbon dioxide and water into glucose and oxygen. They are the primary producers in terrestrial and aquatic ecosystems, providing the foundation for food chains. Some bacteria, like cyanobacteria, also carry out photosynthesis. Additionally, certain bacteria, called chemoautotrophs, use inorganic compounds as energy sources to produce organic molecules. Autotrophic organisms play a crucial role in the carbon cycle by capturing and converting solar energy into chemical energy, sustaining life and supporting ecosystems.