Class 11 Biology Plant Growth Development Differentiation, dedifferentiation, redifferentiation

Differentiation, dedifferentiation, redifferentiation

  • The cells derived from root apical and shoot-apical meristems and cambium differentiate and mature to perform specific functions, termed as differentiation.
  • During differentiation, cells undergo few to major structural changes and also develop a very strong, elastic, lignocellulosic secondary cell walls, to carry water to long distances.
  • The living differentiated cells that have lost the capacity to divide can regain the capacity of division under certain conditions, termed as dedifferentiation.

For example, formation of meristems – interfascicular cambium and cork cambium from fully differentiated parenchyma cells.

  • Some meristems/tissues divide and produce cells that once again lose the capacity to divide but mature to perform specific functions, termed as redifferentiation.

Class_11_Biology_Plant_Growth_And_Development_Cambium

Fig. Cambium

 

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