Question

Explain the process regeneration in Planaria

Answer 1

Sometimes in organisms like Planaria and Hydra, their parts of the body are accidentally cut such as when its body gets entangled under rocks, in order to escape from under the rocks it cuts its body into tiny bits. These peices can grow into a complete organism. This is known as regeneration. Regeneration is carried out by specialised cells. these cells proliferate and make large number of cells. From this mass of cells, different cells undergo changes to become various cell types and tissues. These changes take place in an organised sequence reffered to as development. However, regeneration is not same as reproduction, since most organisms would not normally depend on being cut up to be able to reproduce.