Question

14. Draw a neat diagram to show regeneration in Planaria?​

Answer 1

Regeneration in Planaria :

• All multicellular organisms are not simply a random collection of cells.

• They exhibit different levels of organisation.

• Hence they require a complex method of reproduction.

• These organisms have a single cell type that is capable of growing, proliferating and making other cell types under the right circumstances.

• Animals like Hydra and Planaria can regenerate into a complete individual from a single segment of their body part.

• Thus, regeneration is a type of sexual reproduction in which the development of a new organism occurs from just a broken or cut part of parent organism.

• This is carried out by a specialised cells which proliferate and make a large number of cells.

• From this mass of cells, different cells now undergo changes to become various cells types and tissues.

Answer 2

Answer:

it can be broken into many pieces and each peice can grow into fully organism