Which method is used before drying for the preservation of plant specimens?

Statement $S$: The Museum of Natural History is located in England.
Reason $R$: The Herbarium of Forest Research is located in Kolkata.
$(a)$ Both $S$ and $R$ are true,$R$ is the correct explanation of $S$.
$(b)$ Both $S$ and $R$ are true,but $R$ is not the correct explanation of $S$.
$(c)$ $S$ is true and $R$ is false.
$(d)$ Both $S$ and $R$ are false.

Select the correct match:

Column $I$	Column $II$
$a.$ Ex-situ conservation	$(i)$ Central National Herbarium
$b.$ Quick referral system	$(ii)$ Museum
$c.$ Preserved plants and animals	$(iii)$ Flora
$d.$ Actual account of habitat and distribution of plants of a given area	$(iv)$ Royal Botanical Gardens,Kew

In which of the following are human skeletons sometimes preserved?

Botanical gardens are used for obtaining integrated information about which fields of study?

What is the importance of a Herbarium?