Why do more complex orgaisms not give rise to new individual through regeneration ?

Explanation

(1) Many organisms have the ability to give rise to new individual from their body parts .
(2) Regeneration happens through mitosis and a particular type of tissue can give rise to its own kind only.
(3) In complex organisms, different tissues and organs have altogether different structures.
(4) Regeneration a different kind of tissue from another kind is not possible.
(5) Hence complex organisms are not able to give rise to new individuals through regeneration.