Why are budding,fragmentation,and regeneration all considered as asexual types of reproduction? With neat diagrams,explain the process of regeneration in Planaria.

(N/A) Budding,fragmentation,and regeneration are considered asexual types of reproduction because they involve only a single parent and do not require the formation or fusion of gametes.
Regeneration in Planaria:
$1$. If a Planaria is accidentally cut into several pieces,each piece contains specialized cells that proliferate and make large numbers of cells.
$2$. From this mass of cells,different cell types undergo changes to become various cell types and tissues.
$3$. These changes take place in an organized sequence referred to as development.
$4$. Eventually,these pieces grow into complete new individuals.
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