🔵 Blue light (wavelengths between 450-495nm) plays a specialized role in regulating stomatal opening, phototropism, and the synthesis of chlorophyll through cryptochrome and phototropin photoreceptors.

🔴 Red light (wavelengths between 620-750nm) primarily drives photosynthesis by being efficiently absorbed by chlorophyll molecules, making it crucial for biomass production and flowering in most plant species.