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Explain the process by which cork …

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Explain the process by which cork is formed in trees. Along with the diagram
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Meghna Thapar 5 years, 4 months ago

  • The first cork cambium is formed by the dedifferentiation of the outer part of the cortex.
  • As the stem increases in girth, the epidermis and the cortex are replaced by another meristematic tissue called the cork cambium.
  • It is also called phellogen.
  • The cells of the phellogen are thin-walled, rectangular and narrow.
  • The cork cambium is 2–3 layers thick.
  • Cells of the cork cambium cuts off cells peripherally and towards the centre.
  • Cells on the peripheral region form the cork cambium or phellem.
  • The walls of cork cells have depositions of suberin because of which cork becomes impermeable to water.
  • Cells on the inner region form the secondary cortex or phelloderm. The cells of this region are parenchymatous.
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