Question

Can you think of any reasons why more complex organisms cannot give rise to new individuals through regeneration?

Answer 1

Hint:Regeneration is the capability of fully differentiated organisms to produce a new individual from their own body. Regeneration occurs by mitosis and specified types of tissue can produce to its own kind only.

Complete answer:
In the complex organisms not produce the new individuals by regeneration because the body of the complex organisms is very complicated.
In the body of the complex organisms there are specific organs which do the various specific functions.
The regeneration is done by specialized cells that cells are not found in the body of complex organisms.
Regenerating new individuals of tissue from other kinds is not possible.
Complex organisms have different features but do not have the regeneration capability. There are some reasons are listed below:
Due to the presence of high levels of specialisation, multicellular organisms cannot reproduce by regeneration of a part of some tissue.
Because their systems of their organs are at different levels.
These entire organs are interconnected and work in full coordination and they can regenerate their lost body parts like skin, blood, muscles, but cannot make new individuals.

Note:Simple organisms are able to produce new organisms by the process of regeneration. This is occurring in simple organisms because the whole body is made up of similar kinds of cells in which any part of their body can be formed by growth and development. The tissues in complex organisms cannot regenerate a new individual as they are highly differentiated to perform specialized functions.