Botany - Photosynthesis in Higher Plants Question with Solution | TestHub

A - RuBP

RuBP (Ribulose-1, 5-bisphosphate) accepts atmospheric$C{O}_2$in the presence of the enzyme RuBP carboxylase (RuBisCO) and forms a 6-carbon unstable compound which soon splits into two molecules of a 3-carbon compound called PGA (phosphoglyceric acid)

B - PGA

The phosphoglyceric acid molecules are first phosphorylated by using ATP to produce 1, 3-diphosphoglyceric acid.

C - Some molecules of 3 PGAL are converted into its isomer dihydroxyacetone phosphate (DHAP) in presence of enzyme triose phosphate isomerase.