Answer: sunlight.
- A sunlight
- B the soil
- C the wind
- D ground water
Correct answer: A. sunlight
Explanation: Sunlight provides the energy that drives photosynthesis.
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.