Question

describe how regeneration is carried out in multicellular organisms like hydra

Answer 1

Regeneration is the type of asexual reproduction. It is the growth of an organism from a part of the body. It is a power or ability of a living organism to re-grow the part of the body that gets broken off or cut.When it has involvement with asexual reproduction, then the broken part regenerate into new individual of the same type. 

Hydra exhibits Morphallaxis  type of regeneration.

In this type of regeneration the lost part is replaced by the change in the tissues present in the lost part and each injured part forms a complete organism.

Answer 2

Regeneration is a type of asexual reproduction...In regeneration a new organism is form by the parts of the same organism..

in Hydra it take place as...

From a single cut along the body column two different types of regeneration arise: foot regeneration from the apical part and head regeneration from the basal part. The high proportion of stem cells in the Hydra body column supports these fast and efficient processes....