Where are endangered and rare plants conserved?

In a herbarium,which of the following balls are placed to protect plant specimens from fungi,insects,and moisture?

Where is the zoological park named Indroda Park located?

What can be obtained through research on plants in a botanical garden?

Statement $P$: In botanical gardens,new species are developed through processes like grafting,tissue culture,cloning,and hybridization.
Statement $Q$: Botanical gardens provide necessary information regarding the identification of collected,authenticated,and newly discovered plant specimens.

How does a botanical garden differ from a herbarium?