Question

To raise the plant from small tissue in a culture medium is called

Answer 1

$\textbf{Tissue Culture}$

More to know, refer to attachment !

Answer 2

$Bonjuor!!$

✳ TISSUE CULTURE :

This is a technique of propagating plants by cultivating cells or tissues in a culture medium. When vegetative propagation is not possible in a plant, it's bud, shoot apex, or some other part is used. This part is known as "EXPLANT".
Tissue culture is also known as " MICRO PROPAGATION ".

Hope it helps!!
@charlie16.