in Anatomy of Flowering Plants by

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The important function of the lenticels:

  1. The lenticels help in the gaseous exchange between the atmosphere and the internal tissue of the stem.
  2. The lenticels also helps in transpiration called as the lenticular transpiration.
  3. The lenticular transpiration occurs when the stomata closes.
  4. The lenticels help in allowing the oxygen into and carbon dioxide out.