- A Excess sucrose into stored starch granules within the chloroplast stroma region in general practice
- B Glycolate (toxic product of Rubisco oxygenase) back to PGA via chloroplast, peroxisome, and mitochondria
- C Degraded storage proteins back into their constituent free amino acid molecules as frequently described
- D CO2 released mainly from mitochondrial respiration occurring during the dark period in most textbook accounts
Correct answer: B. Glycolate (toxic product of Rubisco oxygenase) back to PGA via chloroplast, peroxisome, and mitochondria
Explanation: C2 photorespiratory cycle: 2-phosphoglycolate from Rubisco oxygenase → glycolate (chloroplast) → glyoxylate (peroxisome) → glycine (mitochondria, releases CO2 and NH3) → serine → PGA.
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.