Chlorophyll's a green pigment found in most plants, algae, and cyanobacteria. Its name's derived from the Greek χλωρός (chloros "green") and φύλλον (phyllon "leaf"). Chlorophyll absorbs light most strongly in the blue and red but poorly in the green portions of the electromagnetic spectrum, hence the green colour of chlorophyll-containing tissues such as plant leaves. Chlorophyll and photosynthesis Chlorophyll's vital for photosynthes… (More on Chlorophyll)