An aquatic plant in a closed flask is illuminated, and dissolved O2 is recorded over time.
The rising O2 originates from:
- A
Reduction of CO2 by NADPH
- B
Atmospheric O2 dissolving in water
- Ccheck_circle
Photolysis of water in PSII
- D
Breakdown of glucose during respiration
Explanation
O2 produced during photosynthesis comes from splitting water (2H2O → 4H+ + 4e- + O2) at the OEC of PSII.