The Plants - Life Nature Library Author:Frits W. Went Although we accept as axiomatic the fact that plants are green, their green pigment, chlorophyll, is remarkable in the biological world. It makes plants, quite literally, providers of energy to the world's host of living organisms - man and all the other animals, and even nongreen plants. For it is chlorophyll that gives plants the unique abilit... more »y to utilize the energy of sunlight for the manufacture of food; and this in turn means that fungi and animals can use plant compounds for energy and for their own building materials, either directly or through complex food chains. And to man, of course, plants furnish thousands of other useful products beyond the primary benefits of food.« less