What is light and dark reaction.
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Light reactions need light to produce organic energy molecules (ATP and NADPH). They are initiated by colored pigments, mainly green colored chlorophylls. Dark reactions make use of these organic energy molecules (ATP and NADPH). This reaction cycle is also called Calvin Benison Cycle, and it occurs in the stroma.
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photosynthesis takes place in chloroplast. The light reaction takes place in grana and the dark reaction takes place the storma.
In the case of light reaction the light energy is absorbed and is produced into ATP MOLECULES .. and NADPH.
In the case of dark reaction reduction of co2 and carbohydrates(glucose) occurs..
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