Botanical gardens are used for obtaining integrated information about which of the following fields?

$A$ "systematic collection of trees, shrubs, herbs, climbers, and other living plants brought from different parts of the world for scientific purposes" is known as .......

Which of the following taxonomical aids is being described by the given statements $(i-iv)$?
$(i)$. They are generally established in educational institutes.
$(ii)$. They have collections of preserved plant and animal specimens for study and reference.
$(iii)$. Insects are preserved in boxes after collecting,killing,and pinning.
$(iv)$. They often have collections of skeletons of animals too.

Why is the importance of botanical gardens increasing?

Describe other means of recording descriptions.

For the preservation of specimens on a herbarium sheet,which of the following is used?