Answer: Only ATP.
- A Only NADPH
- B Oxygen and sugar
- C Only ATP
- D Both water and CO2
Correct answer: C. Only ATP
Explanation: In cyclic photophosphorylation electrons cycle through PS I, generating ATP only - no NADPH and no oxygen.
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.