Why cannot a more complex organism give rise to new individual through the method of regeneration - Science - How do Organisms Reproduce

Question

Why cannot a more complex organism give rise to new individual
through the method of regeneration?

Sakshi Sharma · Answer

Simple organisms such as Hydra
and Planaria are capable of
producing new individuals through the process of regeneration The
process of regeneration involves the formation of new organisms
from its body parts Simple organisms can utilize this method of
reproduction as their entire body is made of similar kind of cells
in which any part of their body can be formed by growth and
development
However, complex organisms have organ-system level of
organization All the organ systems of their body work together as
an interconnected unit They can regenerate their lost body parts
such as skin, muscles, blood, etc However, they cannot give rise to
new individuals through regeneration

Why cannot a more complex organism give rise to new individual through the method of regeneration?