Differentiate the reactions that take place in presence of light and the reactions which do not require light in photosynthesis.

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Solution

Light reaction Dark reaction
Light-dependent reactions. No light required i.e., they are light independent reactions.
Occurs in grana of the chloroplast. Occurs in the stroma of the chloroplast.
Responsible for generation of ATP and NADPH $_{2}$ . ATP and NADPH $_{2}$ are needed for preparation of glucose from CO $_{2}$ .

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Light reaction	Dark reaction
Light-dependent reactions.	No light required i.e., they are light independent reactions.
Occurs in grana of the chloroplast.	Occurs in the stroma of the chloroplast.
Responsible for generation of ATP and NADPH $_{2}$ .	ATP and NADPH $_{2}$ are needed for preparation of glucose from CO $_{2}$ .