1. Absorption: This is the most important function for the leaf. Chlorophyll within the leaf absorbs light energy, particularly in the red and blue wavelengths. This absorbed energy is used to power photosynthesis, the process by which plants convert light energy into chemical energy (sugars).
2. Reflection: Some light is reflected off the surface of the leaf. This is why leaves appear green – they reflect green wavelengths of light more than other colors.
3. Transmission: A small amount of light can pass through the leaf, especially if it's very thin or if the light strikes it at a certain angle. This is less common than absorption or reflection.
It's important to remember that these three processes don't happen in isolation. All three can occur simultaneously when light strikes a leaf.
