Question

A technique in which part from one plant scion is attached to root stock called

Answer 1

grafting is the technique

Answer 2

Grafting and budding are horticultural techniques used to join parts from two or more plants so that they appear to grow as a single plant. In grafting, the upper part (scion) of one plant grows on the root system (rootstock) of another plant. In the budding process, a bud is taken from one plant and grown on another