What is done during the process of hardening?

$A$ plant cell has the potential to develop into a full plant. This property of the plant cell is called:

Micropropagation is a technique for the production of

For what purpose are plants developed through embryo culture used?

Why is the culture continuously agitated in a rotary shaker during suspension culture?
$(i)$ To facilitate gas exchange for the cells.
$(ii)$ To ensure proper mixing of nutrients in the medium.
$(iii)$ To sterilize the equipment used in the process.
$(iv)$ To maintain a uniform temperature for the inoculum.
$(v)$ This process causes cell aggregates to break into smaller,distinct cell clusters.

Which method is used for the rapid multiplication of banana plants?