Organisms that are capable of photosynthesis are termed photoautotrophs. These include plants, algae, and certain bacteria, which use sunlight, along with carbon dioxide and water, to produce their own food in the form of glucose. Through photosynthesis, these organisms convert solar energy into chemical energy, making them foundational to ecosystems as they serve as primary producers. This process generates oxygen as a byproduct, benefiting aerobic organisms within the ecosystem.