The term for living organisms that produce food from sunlight is "autotrophs." Autotrophs are capable of photosynthesis, a process where they convert solar energy into chemical energy in the form of glucose, using carbon dioxide and water. This group includes plants, algae, and some bacteria. By producing their own food, autotrophs form the foundation of the food chain, supporting heterotrophic organisms like animals and humans, which rely on them for energy and nutrients. Autotrophs play a crucial role in ecosystems, contributing to carbon fixation and oxygen production, essential for life on Earth.