Correct Answer: Carbon dioxide ko organic molecules mein convert karna.
Step 1: Understand that the Calvin cycle is a part of photosynthesis, which is how plants make their food.
Step 2: Know that carbon dioxide (CO2) is a gas that plants take in from the air.
Step 3: Learn that the Calvin cycle uses energy from sunlight (captured in the first part of photosynthesis) to convert carbon dioxide into organic molecules.
Step 4: Recognize that organic molecules are compounds that contain carbon and are used by plants for energy and growth.
