Botany - Photosynthesis in Higher Plants Question with Solution | TestHub

In biochemical (dark) phase, a 5-C sugar ribulose 1, 5-biphosphate (RuBP) acts as$C{O}_2$biphosphate carboxylase (RUBISCO) and forms six molecules of an extremely unstable six-carbon compound. This compound is converted into 3-C molecules of PGA. The capturing of carbon dioxide is called carbon fixation because it fixes gaseous carbon dioxide into a relatively stable organic molecule, PGA.