PHOTOSYNTHESIS  is a process done by plants, algae, and bacteria in which they convert 

Co2(carbon-di-oxide), water, and sunlight into food (glucose) and oxygen in the presence of chlorophyll are called photosynthesis.

Photosynthesis takes in the carbon dioxide produced by all breathing organisms and reintroduces oxygen into the atmosphere (image credit Shutterstock)


  • PHOTOSYNTHESIS is a renewable process. 
  • It is done in the mesophyll cell of the leaf where chloroplasts are present.
  • There are two types of photosynthetic processes: oxygenic photosynthesis and anoxygenic photosynthesis

Photosynthesis is the process in which light energy change into chemical energy.
The equation of photosynthesis is 

(image credit Shutterstock)



6CO2 + 12H2O + Light Energy → C6H12O6 + 6O2 + 6H2O

C6H12O6 (Glucose) is formed which break into  ATP (Adenosine Tri Phosphate) formation 
ATP is the currency of the human body. This all process takes place in leaf so that why the leaf is known as the kitchen of the plant body. 

The 4 requirements for photosynthesis to happen
  1. Chlorophyll. Chlorophyll, the pigment in plants that makes them green, is essential to the photosynthetic process. …
  2. Sunlight. The process cannot work without energy input, and this comes from the sun. …
  3. Water. …
  4. Carbon Dioxide

The glucose molecules provide organisms with two crucial resources: energy and fixed—organic—carbon.

The ecological importance of photosynthesis

  1. It is the primary source of all food on earth
  2. It converts solar energy into organic energy
  3. It helps to maintain oxygen and carbon dioxide level in the atmosphere
  4. The process provides energy in terms of fossil fuels like coal and petrol obtained from plants that lived millions and millions of years ago.