Which scientific term is used for the study of groups of organisms like mammals,reptiles,and plants?

Which knowledge is essential for identifying the recognized organisms?

In taxonomic hierarchy,which of the following groups of taxa will have the highest number of similarities compared to others?

Genus represents $ . . . . . . $.

Read the following statements:
$(i)$ Lower the taxon, more are the characteristics that the members within the taxon share.
$(ii)$ Order is the assemblage of genera which exhibit a few similar characters.
$(iii)$ Cat and dog are included in the same family Felidae.
$(iv)$ Binomial Nomenclature was introduced by Carolus Linnaeus.
Which of the following statements are $NOT$ correct?

If an organism belongs to different orders but the same phylum,it may also belong to the same ......... .