Explain the types of regeneration with suitable example.

Explanation

Abraham Trembley was the first scientist to demonstrate regeneration in Hydra.
Regeneration is the process of regrowth of injured tissue or pat of organism. There are two types of regeneration namely morphallaxis and epimorphosis. In morphallaxis, a small fragment of parent body grows into whole body. Eg: Hydra and planaria. When planaria is accidently cut into many pieces, each piece canregenerate lost part and forms the whole body. The parts usually retain their original polarity. The portion with basal discs develops oral ends with mouth and tentacles and oral portion generate the basal disc in Hydra.
Epimorphosis is the replacement of lost body parts. It is of two types namely reparative and restorative regeneration. In reparative regeneration only, certain damaged tissue can be regenerated where as in restorative regeneration, the detached body part can be regenerated.
Eg: Star fish, tail of wall lizard.