vascular bundle

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vascular bundle

n.
A strand of primary conductive plant tissue consisting chiefly of xylem and phloem. Also called fibrovascular bundle.

vascular bundle

a structure of vascular plants that runs up through the roots, into the stems and out into the leaves, and whose function is transport within the plant. Water and ions are transported mainly by XYLEM, and dissolved organic solutes mainly by the PHLOEM. Some vascular bundles are described as open since they contain dividing CAMBIUM tissue between the xylem and phloem.