What is used to preserve specimens in jars or containers in a museum?

Which of the following provides information about the origin and the complete purpose of plant groups?

Which is the famous herbarium located in the state of Gujarat?

The contrasting characteristics generally in a pair used for identification of animals in a Taxonomic Key are referred to as:

Which of the following provides facilities for botanical taxonomic research?

Statement $S$: Rani Jijamata Udyan is located in Mumbai.
Reason $R$: Himalayan Zoological Park is located in Gangtok.
$(a)$ Both $S$ and $R$ are true,and $R$ is the correct explanation of $S$.
$(b)$ Both $S$ and $R$ are true,but $R$ is not the correct explanation of $S$.
$(c)$ $S$ is true and $R$ is false.
$(d)$ $S$ is false and $R$ is true.