What is emasculation? Why and when is it done?

Emasculation in angiospermic plant is . . . . . . .

Identify the correct order of steps involved in artificial hybridization in plants.

In grafting,the part of the stem containing a bud that is joined to a rooted stock is called . . . . . . .

To ensure that only the desired pollens fall on the stigma in the artificial hybridization process:
$(a)$ The female flower buds of a plant producing unisexual flowers need not be bagged.
$(b)$ There is no need to emasculate unisexual flowers of the selected female parent.
$(c)$ Emasculated flowers are to be bagged immediately after cross-pollination.
$(d)$ Emasculated flowers are to be bagged after the removal of anthers.
$(e)$ Bisexual flowers showing protogyny are never selected for cross.
Choose the correct answer from the options given below:

In hybridization techniques,what is the process of removing stamens from a flower called?