What is Photosynthesis? Definition: It is the process by which green plants and some other organisms use sunlight to synthesise nutrients from carbon dioxide and water. The diagram of photosynthesis shows the process of converting light energy into chemical energy in green plants and other animals. Water, carbon dioxide, and minerals are converted into oxygen and energy-rich organic molecules using light energy acquired during photosynthesis. Plants, algae, and some microorganisms transform ... Explore the photosynthesis process with detailed steps, chemical equation, and diagrams . Understand how plants convert light into energy. Learn how plants, algae, and certain bacteria use light energy from the sun to make glucose and oxygen in photosynthesis . See the diagram of the process and its stages, equation, factors, and importance. What is Photosynthesis ? Photosynthesis is a process where the living organisms, typically the plants, take in the Sunlight, consume it, process it, and then utilize it as a fuel to function correctly. In other words, the plants use photosynthesis to prepare food for themselves to feed on, where the source of energy remains the light, typically that is emitted from the Sun.