The first stable product of Calvin cycle is 3-phosphoglycerate, 1,3-biphosphoglycerate, Glyceraldehyde-3-phosphate, or Ribulose-5-phosphate?

Calvin pathway occurs in all photosynthetic plants which is CO2 fixation cycle. Carbon dioxide combines with ribulose-1,5-bisphosphate to produce a transient intermediate compound. The intermediate compound splits up immediately in the presence of water to form the two molecules of 3-phosphoglycerate or PGA. It is the first stable product of photosynthesis.