Who discovered C3 cycle?AMelvin CalvinBKollikerCRobert BrownDRudolph MarkusAnswer: A. Melvin Calvin Read Explanation: Melvin Calvin discovered the C3 cycle, otherwise known as Calvin cycle in photosynthesis pathway of Chlorella. He used radioisotope carbon – 14 to mark the path of the metabolism in the C3 plants. Read more in App