Ecotype Genetically distinct adapted population to a particular habitat of species in different geographical area

Ecophene Phenotypic variants of a single genotypes in a particular area or habitat

Phenotypic Plasticity Shift in an organism body physiology behavior: When shifted to different environment condition

$e.g.,$ When a man living an plane are a went to hill area or mountain. Three extra $R.B.C$ cells are produced seems to help transport available oxygen around the body is called phenotypic plasticity