Answer: Stroma of chloroplast.
- A Thylakoid membrane
- B Cytoplasm
- C Stroma of chloroplast
- D Mitochondria
Correct answer: C. Stroma of chloroplast
Explanation: The Calvin cycle (dark reactions) occurs in the stroma of the chloroplast. It uses ATP and NADPH to fix CO<sub>2</sub> into sugars.
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.