Nutrition in plant, photosynthesis, events in photosynthesis, conditions necessary for photosynthesis

• Nutrition in plants :-

Green plants are autotrophic thus prepare their own food by the process of photosynthesis .

• Photosynthesis:-

It is a process by which green plant synthesise organic food . This food is prepared by green plants from Carbon dioxide  and water in the presence of Sunlight and chlorophyll.  

Reaction involved:-

6Co₂+12H₂o→C₆H₁₂O₆+6H₂O+6CO₂↑

The plants use the energy in Sunlight to prepare food from Carbon-di-oxide , and water in presence of Chlorophyll.

The leaves of a plant are green because they contains tiny green coloured organelles called Chloroplast.

Chlorophyll  ( green coloured pigment) is present in the green coloured  bodies called “chloroplast” inside the cells.

Thus , Chloroplast are the site of photosynthesis as they contain Chlorophyll pigment.

• Events in photosynthesis:

Firstly the Absorption of light energy is done by chlorophyll.
Then Light Energy is converted into chemical Energy .
And the Reduction of carbondioxide to Carbohydrates (starch) .

All the above steps may or may not  takes place one after the other immediately.

• Conditions necessary for photosynthesis:-

(1) sunlight

(2) Chlorophyll

(3) Carbondioxide

(4) Water