Although plants don't have a circulatory system like humans, they still must transport material from one part of the organism to another....
Dr. Yvonne Lawley (Assistant Professor of Agronomy and Cropping Systems, University of Manitoba) introduces the lesson:
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Multimedia Textbook Enhancements from McGraw Hill Glencoe:
American Society of Plant Biologists
Published on the webquest maker zunal.com by a student teacher.
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