Here's why:
* Photons are the fundamental units of light and electromagnetic radiation. They carry energy, and the amount of energy a photon carries depends on its frequency (or wavelength).
* Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose.
* Chlorophyll, the green pigment in plants, absorbs photons of specific wavelengths (mainly red and blue light), and this absorbed energy is used to power the chemical reactions of photosynthesis.
So, while light itself is essential for photosynthesis, it's the individual photons within that light that carry the energy needed to drive the process.
