Question

Botanical gardens are living herbaria. Comment

Answer 1

Yes, Botanical Gardens are living herbaria as herbaria mean keeping specimens in herbarium sheets, as when we do so we actually need to kill the specimen but in botanical gardens, they are preserved alive and an appropriate atmosphere(required to live) is maintained.
Also
It is apt to say biological gardens are living herbariums because, like herbariums, where plant materials are preserved for future scientific reference, biological gardens are also a collection of plant materials in living form. Therefore in both cases, the primary objective is to collect, maintain and study the available plant diversity and the only difference lies in their living and non-living status.