Answer:
The Calvin cycle takes place only in the chloroplast.
Step-by-step explanation:
Photosynthesis and cellular respiration are opposite to each because the glucose and oxygen synthesised during photosynthesis are used in the cellular respiration. These two physiological processes take place in different cell organelles. Cellular respiration occurs in mitochondria whereas, photosynthesis occurs in chloroplast. Thus, the Calvin cycle is a stage of photosynthesis takes place only in the chloroplast and the Krebs cycle is a stage of cellular respiration takes place only in the mitochondria.