Chlorophyll is a pigment found in plants, algae, and some bacteria that is essential for photosynthesis. There are several types of chlorophyll, the most common being chlorophyll a and chlorophyll b.

* Chlorophyll a absorbs primarily red and blue light, while reflecting green light, which is why plants appear green.

* Chlorophyll b absorbs similar wavelengths to chlorophyll a but also some blue and orange light, expanding the range of light that can be used for photosynthesis.

There is no scientific evidence of a "chlorophyll 2." If you have seen this term used, it's likely a mistake or a misunderstanding.