First stable product of dark reaction in C₃ plants is

Options

(a) PEP
(b) RuBP
(c) PGA
(d) OAA

Correct Answer:

PGA

Explanation:

In C₃ plants, the carbon dioxide combines with ribulose 1, 5-diphosphate (RuDP) (now called RuBP – Ribulose – 1,5-bisphosphate) and gives rise to a 3-C compound, phosphoglyceric acid. It is first stable product of C₃ cycle. The process can be called as Calvin cycle.