A plant species shows several morphological variations in response to latitudinal gradient. When grown under similar conditions of growth, the morphological variations disappear and all the variants have common morphology. What are these variants called?

Explanation

These variants are called biotypes It is a group of genetically similar plants showing similarity when grown in same environmental and geographical regions. The same environment provide them the similar abiotic factors like soil, pH, temperature, etc.
When they are grown in two different geographical regions, they are exposed to different abiotic characters thus, it affects their growth and development bringing changes in their external morphological features but, they have the same genetic constitution.