Photosynthesis is the process by which green plants prepare their own food using sunlight, carbon dioxide, and water.
Definition:
It is the process of converting light energy into chemical energy in the form of glucose.
Equation:
6CO + 6HO CHO + 6O (in presence of sunlight and chlorophyll)
Steps of Photosynthesis:
Light Reaction (in thylakoid):
Sunlight is absorbed by chlorophyll
Water is split into hydrogen and oxygen
Oxygen is released as a by-product
Dark Reaction / Calvin Cycle (in stroma):
Carbon dioxide is fixed
Glucose is produced using energy from light reaction
Factors Affecting Photosynthesis:
Light intensity
Carbon dioxide concentration
Temperature
Water availability
Importance:
Produces food (glucose) for plants
Releases oxygen needed for life
Maintains balance of CO and O in atmosphere
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