does primary xylem divide
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The two populations of dividing cells unite to form a continuous ring of dividing cells, the vascular cambium. ... The primary xylem is in the center of the stem, while the primary phloem is pushed outward by the new cells that arise from the vascular cambium. Eventually, the primary phloem is crushed into the cortex.
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Xylem formation begins when the actively dividing cells of growing root and shoot tips (apical meristems) give rise to primary xylem. ... When this happens, the primary xylem cells die and lose their conducting function, forming a hard skeleton that serves only to support the plant.
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