uncements ules C Zoom es te 365 @ S X 3 25 111 D Any pigment absorbs some wavelengths of light and reflects other wavelengths (because it does not absorb them). It turns out the color that light appears to us is determined by its wavelength. The best known photosynthetic pigment is chlorophyll, which is green. There are actually two forms of chlorophyll present in land plants, each of which has a different shade of green. We call them chlorophyll a and chlorophyll b. Most plants have other pigments too, including an orange/red family of pigments called carotenes (or carotenoids) and a group of yellow pigments called xanthophylls. We can see the pigments in a plant by separating them using a procedure called paper chromatography. A thin strip of absorbent paper has a spot of the plant "juice" (which would look green) rubbed onto it. Then the paper is dipped into a solvent like alcohol. The solvent is wicked up the paper, just as with a paper towel absorbing a spill. However each pigment in the plant juice has