What is the main component found in the major botanical gardens of the world?

Herbaria are associated with which of the following?

Each statement in the key is called

Match the following locations with their respective zoological parks:

Column-$I$ (Location)	Column-$II$ (Zoological Park)
$A$. Chennai	$i$. Zoological Park
$B$. Ahmedabad	$ii$. Rani Jijamata Udyan
$C$. Mumbai	$iii$. Nehru Zoological Park
$D$. Hyderabad	$iv$. Safari Park
	$v$. Arignar Anna Zoological Park

Why is the importance of botanical gardens increasing?

$S$ Statement: In herbaria,plant specimens are preserved using specific methods.
$R$ Reason: $A$ herbarium is a storehouse of plant specimens collected from various locations.
$(a)$ Both $S$ and $R$ are true,and $R$ 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.
$(d)$ $S$ is false and $R$ is true.