Question

Identify the incorrect match:

• A. Proton gradient across membrane - ATP synthesis
• B. Fixation of CO2 in C3 plants - Synthesis of 3 PGA
• C. Photophosphorylation - Hexose sugar synthesis
• D. CO2 fixation by PEP case - Synthesis of OAA

Hint:

Light reactions → ATP & NADPH; Dark reactions → sugar synthesis.
Associate each process with correct products to avoid confusion.
Remember photophosphorylation = ATP generation only.

Answer 1

The Correct Option is C

1. Photophosphorylation produces ATP and NADPH, not hexose sugar.
2. Hexose sugar is synthesized during the Calvin cycle (carbon fixation).
3. Proton gradient → ATP synthesis, C3 plants → 3-PGA, PEP carboxylase → OAA are all correct.
4. Hence incorrect match is (3) Photophosphorylation - Hexose sugar synthesis.