When an animal or plant of many cells breaks up into two or more parts, and when these parts survive to produce a new organism, reproduction occurs by regeneration
Step-by-step explanation:
Regeneration is illustrated as how some organisms renew failed or separated body parts. The capacity of renewing portions may differ between organisms. Only a distinct structure on the piece of the old one can be developed by organisms.
In the process of reclamation, the entire bodies may restore large parts of themselves when they have been made in two. Regeneration, as one phase of the global manner of growth, is a fundamental characteristic of all living systems. Without it, there could be no life, for the real preservation of an organism.