Well the IUPAC naming system is for naming organic compounds in chemistry whereas the taxonomic hierarchical naming system is for classifying and naming species of organisms and finding relationships in terms of physical characteristics. The only way I'd say that they're similar is in the way they actually name the compound/species. E.g, in chemistry, you always have a base name and to that base name you can add a suffix and/or prefix(es). And in biology, you always have the first bit of the me which is the generic name and the second bit of the name which is the specific name. I know this probably wasn't very helpful but this is a very odd question if it's one that would be in an exam because chemistry and biology wouldn't usually be mixed together...
The similarity between the IUPAC naming and the zoological taxonomic nomenclature is that both are used for naming and providing identity.
The difference between the IUPAC naming and the zoological taxonomic nomenclature system is that the IUPAC naming is the process of naming the chemical compounds. These names are published in the Nomenclature of Organic Chemistry (Blue book). On the other hand, the zoological taxonomic naming system is used for naming the animals. The International Code of Zoological Naming has published many research works related to zoological naming.
