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The Growth of Woody Plants - The Plants Kingdom - THE ORIGIN AND CLASSIFICATION OF LIFE - CONCEPTS IN BIOLOGY
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botany - If the xylem of a woody plant is composed of dead tissue, how does sapwood become heartwood? - Biology Stack Exchange
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GC6VM00 Xylem and Phloem (Container Mischief #3) (Traditional Cache) in Alaska, United States created by Dogliest Cache
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Art:The xylem consists of the heartwood, which is inactive yet imparts strength to the tree, and the sapwood, which carr… | What is tree, Tree structure, Tree roots
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File:MAGNIFICATION OF PHLOEM OR XYLEM TUBES IN DOUGLAS FIR WOOD TAKEN THROUGH A MICROSCOPE IN NEW WESTMINSTER, BRITISH... - NARA - 555171.jpg - Wikimedia Commons
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