Answer :

The chemical reaction of photosynthesis under normal circumstances can be written as:
6CO2 + 6H2O ----------------------> C6H12O6 + 6O2
                            SUNLIGHT
In the above reaction:
CO2 = Carbon Dioxide
H2O = Water
C6H12O6 = Glucose
O2 = Oxygen
Photosynthesis is the process by which the plants make their food with the help of sunlight. This food helps the plant to live and grow. The by-products created by photosynthesis are glucose and oxygen. The glucose is used by the plants for growth and oxygen is released in the air.