Photosynthesis means putting together by light. During this process, plants collect energy from sunlight. Some of the energy is used to rearrange the atoms of water and carbon dioxide into sugar and oxygen, the remainder is stored in the sugar. Without photosynthesis we wouldn't have air to breath or food to eat. The equation is taken from Dorling Kindersley.
Light is absorbed and reflected by pigments .
Each pigment is able to absorb specific wavelengths of light energy. The energy that is reflected is that which we can see. Energy that is absorbed is converted to chemical energy in photosynthesis. BSCS Green Version. Biological Science An Ecological Approach.