Question

Photorespiration in $C_3$ plants start from

• A. Phoshoglycerate.
• B. Glycerate.
• C. Glycine.
• D. Phoshoglycolate.

Answer 1

The correct option is D Phoshoglycolate.

Photorespiration leads to loss of fixed carbon dioxide in C${}_3$ plants. The enzyme is RUBISCO. During photorespiration, this enzymes reacts with oxygen instead of carbon dioxide to ribulose 1,5 bisphosphate to produce phosphoglycolate as the first product.