(i) & (ii) only

(ii) & (iv) only

(i) & (ii) only

regarding taxonomic Categories. (i) Each step or rank in hierarchy is called taxonomic category. (ii) Species is a group of individual organisms with fundamental similarities capable of breeding among themselves. (iii) Taxonomic studies of all unknown organisms have led to the development of common categories like kingdom,phylum or division, class, order, family genus and species. (iv) Lower the category, greater is the difficulty of determining the relationship to other taxa at the same level. All of the above