It is a process in which the green chlorophyll-containing cells of the plants synthesize the carbohydrates from CO2 and water in the presence of sunlight.
Equation for the photosynthesis can be written as:
6CO2 + 12H2 O → C6 H12 O6 + 6H2 O + 6O2
The products of photosynthesis make the structure of plants.
Some of the products are stored as a food for plant.
It is accompanied by the evolution of oxygen as a by-product.