Dear Botanists (green pigment)

From: piaba piabinha at yahoo.com> on 2003.09.24 at 16:17:19(10623) mr. held, not being a botanist (me that is), i think however that your instincts are right. as a matter of fact, some orchids lack leaves or stems and have only roots, that are green. obviously those are the only parts they have to photosynthesize. it's quite a size to see these small orchids, that are nothing more than a jumble of roots, flowering... tsuh yang chen, NYC +More --- Ted.Held@hstna.com wrote: > > Dear all the good botanists on the list, > > Do all green parts of a plant contribute to > photosynthesis? Even stems, > midribs, and petioles? This would make sense to me. > Why go to all the > trouble to make green pigment, which I assume to be > chlorophyll, if it's > not intended to make sugars and whatnot? Sorry to > ask such an elementary > question, but the botany books only seem to talk > about photosynthesis in > relation to leaf blades. Sometimes even exposed > roots turn green if exposed > to light. > > Thanks. > > Ted. __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com

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