It is a type of propagative method where cells/tissues from the growing parts of organisms are taken and subjected to an artificial medium where they can grow.
This method is beneficial as it can produce a large number of offspring within a very short period of time.
Also, since healthy tissues are taken for growing, the plants are healthy and disease free.
Tissue culture is also called micropropagation because:
Tiny cells or tissues are used for this method.
New plants are propagated with the help of these microscopic cells.
Thus this method is also called micro-propagation.