Which tissue is responsible for increase in diameter of the stem?

Cork cambium and vascular cambium are responsible for the increase in diameter of the stem and root of a plant. These are present in dicot plants. These are the lateral meristems and are responsible for the secondary growth of the plant.  Lateral meristems are part of meristematic tissue.

Lateral Meristem

Lateral meristem is existent in the radial portion of the stem or root. Lateral meristem upsurges the thickness of the plant.

  • It is located in the stems and roots on the lateral side.

  • It increases the thickness of the plant.

  • Vascular cambium and cork cambium are the two lateral meristems.

  • These divide preclinically or radially and give rise to secondary permanent tissues.


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