Photosynthesis. Photosynthesis is a process whereby green plants and other organism like bacteria produce their food using organs like chlorophyll in plants and plasma membrane in bacteria to convert solar energy into chemical energy. The energy is stored in carbohydrate molecules, such as sugars, which are synthesized from carbon dioxide and water. Most plants, algae, and cyanobacteria perform photosynthesis. These organisms and plants produce organic waste product like water and Oxygen which is essentially for life on earth.