Answer: Glycolate (toxic product of Rubisco oxygenase) back to PGA via chloroplast, peroxisome, and mitochondria.
- 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 CO<sub>2</sub> 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 CO<sub>2</sub> and NH<sub>3</sub>) → serine → PGA.
Simplified photosynthesis diagram: light energy, CO2, and H2O enter the leaf and are converted in the chloroplast into glucose and O2.
Concept context
Light reactions, the Calvin cycle, C 3 /C 4 /CAM pathways, photorespiration, and factors affecting the rate of photosynthesis. One of the highest-yield NEET chapters.