Question

Identify the incorrect match.

• A. Regeneration of PEP – Mesophyll cells
• B. RuBP oxygenase activity – Chloroplast
• C. Photorespiratory loss of CO${}_2$ – Cytoplasm
• D. Decarboxylation in C${}_4$ pathway – Bundle sheath cell

Answer 1

The correct option is C Photorespiratory loss of CO${}_2$ – Cytoplasm

Photorespiration is the reaction where RuBP combines with O${}_2$ and releases CO${}_2$ which is also catalysed by RuBisCO. It produces a toxic byproduct instead of sugar. It occurs in chloroplast of the cell. There is neither synthesis of sugars, nor of ATP instead utilises ATP.