What is the technique of obtaining a large number of plantlets by tissue culture called?

Select the correct match for $X$ and $Y$:

Column $X$	Column $Y$
$(1)$ Callus culture	$(P)$ Hybrid embryo rescue
$(2)$ Suspension culture	$(Q)$ Differentiated mass
$(3)$ Embryo culture	$(R)$ Undifferentiated mass

Which method is used to obtain somaclones?

How many types of plant tissue culture are there?

After the demonstration of totipotency,a botanist wishes to produce identical plants from an angiosperm by tissue culture. The parts or tissues which are likely to yield haploid embryos are:

What is tissue culture useful for?