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(Fig. 24-15c-d,e,f; Fig. 24-16)
A. Vascular Cambium à༎ SECONDARY XYLEM AND SECONDARY PHLOEM
- Vascular cambium develops by mitosis (periclinal divisions) of residual (undifferentiated) procambial
cells that persist between primary phloem and primary xylem (Fig. 24-15c) - Pericycle opposite protoxylem poles begins to divide and forms the closed circle of vascular cambium
around the xylem. - Once vascular cambium forms, repeated divisions of fusiform and ray initials give rise to cells of
secondary xylem to the inside, secondary phloem to...
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- Spring '14