Name the gas used in photosynthesis.

Carbon dioxide:

1. Photosynthesis is the process by which autotrophs are able to synthesize their own food.
2. Plants use simple inorganic substances such as carbon dioxide, water and sunlight to produce complex organic substances such as glucose and starch.
3. It is termed as photosynthesis because it can only occur in the presence of sunlight.
4. The chlorophyll pigment in plants help in trapping the energy from the sun.
5. Glucose, Oxygen and water are the products formed during photosynthesis.