Lecture 12

24 15c def fig 24 16 a vascular cambium secondary

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ms: (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...
View Full Document

Ask a homework question - tutors are online