Long ago, when I was in high school biology class, it was explained to me that plant leaves are green because they contain chlorophyll, which is green. Why then do some trees have red leaves? Is there a red type of chlorophyll? If so, why was this never mentioned in biology class?
I’ve tried researching the answer on the web, but with no success. Anyone know?
Some plants do have pigments other than chlorophyll, called accessory pigments. There’s a group called carotenoids that includes red and other colors. If you do a Google search for carotenoid photosynthesis you’ll get more information than you want, probably.