calvin cycle is called as dark reaction and light independant reaction..but how can it be called so when it takes place in the day time and uses the products of light reaction?

Calvin cycle is called as dark reaction as it does not depend directly on the light but depends on the products of the light reaction like ATP and NADPH. Actually, calling Calvin cycle a dark reaction is a misnomer, but to differentiate it from the light reaction, it is conventionally called as dark reaction.

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