6.2a Photosynthesis is carried on by green plants and other organisms containing
chlorophyll. In this process, the Suns 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