(i) Phylum A category, which is higher than class and consisting of one or more related classes with certain common features. Botanists use the term division for phylum.
(ii) Class A taxonomic category higher in rank than order and consisting of one or more related orders with some common features.
(iii) Family A category having one or more related genera with some similar common features.
(iv) Order (Cohort) A category consisting of one or more related families having some common or correlated characters.
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