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

Which method is used for the preservation of dead bodies of large-sized animals?

Match the following columns:

Column-$I$	Column-$II$
$1$. Central National Herbarium	$a$. Dehradun
$2$. Museum of National History	$b$. Darjeeling
$3$. British Museum of Botanical Garden	$c$. Paris
$4$. Herbarium of Forest Research	$d$. Kolkata
	$e$. Kew

Which information is recorded on the herbarium sheet for plant specimens?

In which of the following are fernery,conservatory,artificial reservoir,and orchidarium developed?