6.2a Photosynthesis is carried on by green plants and other organisms containing

chlorophyll. In this process, the Sun’s energy is converted into and stored as chemical

energy in the form of a sugar. The quantity of sugar molecules increases in green plants

during photosynthesis in the presence of sunlight.

6.2b The major source of atmospheric oxygen is photosynthesis. Carbon dioxide is

removed from the atmosphere and oxygen is released during photosynthesis.

6.2c Green plants are the producers of food which is used directly or indirectly by