Question

Identify the correct matching pair to Calvin cycle:

• A. A-II, B-III, C-IV, D-I
• B. A-I, B-IV, C-II, D-III
• C. A-IV, B-III, C-I, D-II
• D. A-IV, B-III, C-II, D-I

Hint:

Calvin cycle stoichiometry: 6 CO2 → 1 glucose, uses 18 ATP & 12 NADPH.
Memorize ATP/NADPH requirement for 1 CO2 and 1 glucose.
Helps quickly solve multiple matching questions in photosynthesis.

Answer 1

The Correct Option is A

1. Fixing one CO2 in C3 cycle requires 3 ATP & 2 NADPH → A → IV.
2. One glucose formation requires 6 CO2, 18 ATP & 12 NADPH → B → III.
3. ATP & NADPH required for one glucose = 18 ATP & 12 NADPH → C → II.
4. Number of CO2 molecules per glucose = 6 → D → I.
5. Correct matching is (1) A-II, B-III, C-IV, D-I.