(i) With the help of a diagram demonstrate the process of regeneration as seen in Planaria.
(ii) Which type of cells are used by such multi-cellular organisms to regenerate?

Explanation

Planaria is a type of flatworm. It has the amazing capacity to regenerate its lost body part. When the flatworm is cut horizontally, separating the head from the tail, the tail will regenerate the lost head and the head will regenerate the lost tail. This process is known as regeneration. The diagram illustrating the process of regeneration in Planaria is given below :

(ii) Specialized cells or Regenerative cells.