Where is the National Botanical Research Institute $(NBRI)$ located?

What is a herbarium sheet?

Which famous herbarium is located in France?

What is the process of treating herbarium sheets to prevent fungal and insect attacks called?

Assertion $A$: Herbaria provide keys for preparing modern taxonomic systems.
Reason $R$: Herbaria provide facilities for taxonomic research.
Which option is correct for Assertion $A$ and Reason $R$?

How is the vivid body structure of birds and mammals preserved in museums?