- A Glucose, formed directly in a single step
- B Sucrose, exported immediately to the phloem
- C PGA (3-phosphoglycerate)
- D Oxaloacetate, formed in C4 mesophyll cells
Correct answer: C. PGA (3-phosphoglycerate)
Explanation: In the Calvin cycle, CO2 + RuBP → 2 molecules of PGA (3-phosphoglycerate, a 3-carbon compound). Hence called C3 pathway.
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.