Photorespiration reaction catalyzed by RuBisCo is shown below : RuBP +O₂ 3-Phosphoglycerate + X Identify “X” from the given options :

Step-by-step solution

In photorespiration, the enzyme RuBisCo acts as an oxygenase. It catalyzes the oxygenation of Ribulose-1,5-bisphosphate (RuBP) to form one molecule of a 3-carbon compound, 3-phosphoglycerate, and one molecule of a 2-carbon compound, 2-phosphoglycolate. The reaction is: RuBP +O₂ 3-Phosphoglycerate + 2-Phosphoglycolate Thus, the product X is 2-Phosphoglycolate. Answer: 2-Phosphoglycolate