Which part would be most suitable for raising virus-free plants for micropropagation?

Match the following columns:

Column $I$	Column $II$
$(a)$ $UV$ light	$(p)$ Embryo culture
$(b)$ Protoplast isolation	$(q)$ Plant part
$(c)$ Orchid	$(r)$ Sterilization
$(d)$ Explant	$(s)$ Callus culture

To meet the demands of the society,in vitro production of a large number of plantlets in a short duration is practised in floriculture and horticulture industry today. This is called

The inherent capacity of a cell to regenerate a new whole organism is called

In which method are groups of cells suspended in a liquid medium?

Which of the following is absent in the culture medium used for plant tissue culture?