- A Light-dependent reaction
- B C3 cycle or dark reaction
- C Krebs cycle for plants
- D C4 pathway
Correct answer: B. C3 cycle or dark reaction
Explanation: Calvin cycle = C3 pathway = dark reaction (or light-independent reaction). First stable product is 3-carbon PGA (3-phosphoglycerate).
Concept context
Light reactions, the Calvin cycle, C3/C4/CAM pathways, photorespiration, and factors affecting the rate of photosynthesis. One of the highest-yield NEET chapters.