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Question

Any two parts of a leaf which allows transpiration is called


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Solution

Lenticel & Stomata:

  1. A lenticel is said to be a porous tissue made up of cells with very large intercellular spaces in the periderm of the secondarily thickened organs, mainly on the stems of wood plants and also the root of dicotyledonous flowering plant.
  2. Lenticel formation starts occurring beneath stomatal complex during the primary growth after the development of first periderm.
  3. As the stems and roots continues to mature, lenticel development continues in the new bark or root. It functions as a pore, providing a medium for the direct exchange of gases between the internal tissues and the atmosphere.
  4. Stomata are also responsible for gaseous exchange present in plants.

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