Define differentiation. Also,provide details on how you can distinguish between dedifferentiation and redifferentiation.

(N/A) Differentiation: It is a process in which cells derived from root and shoot-apical meristems,cambium,or other meristems undergo structural and functional changes to mature and perform specific functions. For example,cells lose their protoplasm to form tracheary elements and develop strong,elastic,lignocellulosic secondary cell walls to transport water over long distances.
Dedifferentiation: This is a phenomenon where living differentiated cells regain the capacity to divide mitotically under certain conditions. These cells act as meristems. For example,the formation of interfascicular cambium and cork cambium from fully differentiated parenchyma cells.
Redifferentiation: This occurs when the products of dedifferentiated cells or tissues lose the capacity to divide again and mature to perform specific functions. For example,the formation of secondary cortex and cork from the cork cambium.