Describe how vascular cambium bring about growth in higher plants

  • This is located between xylem and phloem and its activity causes secondary growth or increase in girth.
  • The vascular cambium consists of two types of cells fusiform initials and ray initials.
  • The cells of fusiform divide by mitosis tangentially to form secondary xylem on the inside and secondary phloem on the outside
  • Cells of the ray initials divide by mitosis to form secondary parenchyma cells which accumulate to form rays between neighboring xylem and phloem.
  • The accumulation of secondary tissue results into increase in girth of the stem and hence secondary growth
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