joelle Posted April 16, 2007 Share Posted April 16, 2007 Why are herbaceous stems green? Link to comment Share on other sites More sharing options...
SkepticLance Posted April 17, 2007 Share Posted April 17, 2007 Because they contain chlorophyll and carry out photosynthesis. As a general rule, plants will put chlorophyll into any part that receives sunlight, as long as other functions do not prohibit it. A tree cannot put chlorophyll into a stem or branches, since it needs enormous strength to support weight, and only hard tissues that do not pass sunlight can do it. However, a herbaceous plant needs only soft tissues that will pass sunlight, to support it. So it puts chlorophyll there. Link to comment Share on other sites More sharing options...
joelle Posted April 19, 2007 Author Share Posted April 19, 2007 thank you so muchh:) Link to comment Share on other sites More sharing options...
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