Photosynthesis is the process by which green plants, algae, and some bacteria use light energy from the sun to make glucose, a type of sugar that stores chemical energy. During this process, these organisms take in carbon dioxide from the air and water from the soil.Using chlorophyll, the green pigment found in leaves, they absorb light energy from the sun. This energy is used to convert carbon dioxide and water into glucose and oxygen. The plant uses glucose for energy and growth, while oxygen is released into the air as a waste product. Photosynthesis is essential because it is the primary source of food and oxygen for many living organisms, including humans.
Need help reaching your target grade? Explore our notes, questions by topic and worked solutions, tailor-made for GCSE Chemistry.
Explore GCSE Chemistry
Share this article
written revision resources that improve your