The international size of a herbarium sheet is

Museums often have galleries for which of the following?

$A :$ Dried specimens are poisoned by $HgCl_2$.
$R :$ It protects the specimen from the moisture.

Which of the following animals are provided with a protected shelter in a zoological park?

Which types of plants are grown in botanical gardens?

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.