Which of the following statement is not true with Calvin Cycle?

The correct answer is: It requires sunlight

Calvin cycle is a dark reaction with mean it is a light independent cycle. It occurs during day time but the energy from sunlight is not needed by it to perform its function. Though it is a dark reaction, the Calvin cycle does not actually occur in the dark or during night time because the process requires NADPH, which is short lived and comes from the light dependent reactions.