• PRIMARY AND SECONDARY PLANT GROWTH Page 2
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  • II. Secondary Growth
  • A. Vascular Cambium
  • 1. Origin
  • 2. Two types of cells
  • 3. Direction of cell differentiation
  • 4. Secondary Xylem and Phloem provide physical continuity between Primary Xylem and Phloem of Roots and Stems
  • 5. Only increases girth of plant body
  • 6. Human uses of Wood=Secondary Xylem
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