Short Note on Photosynthesis

Photosynthesis

Definition:

Photosynthesis is an autotrophic mode of nutrition which is generally a  physico-chemical process by which plants can convert light energy into chemical energy, in the form of carbohydrate from simple inorganic substances like atmospheric carbon dioxide and water.

• The basic raw materials required for photosynthesis are carbon dioxide, water, chlorophyll and sunlight.
• Leaves are referred to as the sites of photosynthesis. Hence, they are called as food factories of the plant.
• Leaves contain small pores called stomata on both their surfaces. 
• Stomata are the structures which help in the exchange of gasses. 
• Opening and closing of the stomata occurs by the guard cells present in them.
• Also, leaves are rich in green color plastids referred to as chloroplasts which are rich in chlorophyll pigment. Chlorophyll  is responsible for trapping the energy from sunlight.
• All this combined with sunlight and carbon dioxide, makes food.

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