Question : What are the important events and end products of the light

1.	Question : What are the important events and end products of the light reactions?
Answer» Solution :The important EVENTS of light reaction are (i) Exciation of chlorophyll molecule to emit a pair of electrons and use of theirenergy in the formation of ATP from ADP+Pi. This process is called photosphosphorylation. (ii) SPLITTING of water molecules (a) `2H_(2)O to 4H^(+)+4e^(-)+O_(2) uarr` (B) `NADP+2H^(+) to NADPH_(2)` End products of light reaction are NADPH and ATP. Reducing power is produced in the light reaction i.e., ATP and `NADPH_(2)` molecules which are USED up in dark reaction. `O_(2)` is evolved as a by product the splitting of water.

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