In which year was the International Code of Botanical Nomenclature $(ICBN)$ first proposed?

Herbarium consists of

Which of the following places is used for storing animals in a living form?

Which of the following is $NOT$ a significant contribution of botanical gardens?

Out of the four statements $(1-4)$ given below,which two statements are correct regarding botanical gardens?
$(1)$ $A$ collection of plant specimens collected from various places.
$(2)$ Information for the identification of newly discovered plant specimens can be obtained.
$(3)$ $A$ planned collection of living plants for scientific purposes.
$(4)$ For the purpose of identification of various plant species.

$A$ sheet of fixed size used for mounting plant specimens is known as...