* Less sunlight: Photosynthesis requires sunlight. Cloudy days have less sunlight reaching the leaves, which limits the amount of energy available for the process.
* Reduced chlorophyll activity: Chlorophyll, the green pigment in plants, is crucial for absorbing sunlight. In low light conditions, chlorophyll activity slows down, further hindering photosynthesis.
Think of it like this: Photosynthesis is like a factory that makes food for the plant. Sunlight is like the fuel that powers the factory. On a cloudy day, there's less fuel, so the factory runs slower and produces less food.
