The naming and classification of living organisms are based on what?

As we go from species to kingdom in a taxonomic hierarchy,the number of common characteristics

Which statement is correct regarding dogs,rice,and mammals?

Attempt giving a clear definition of the term species.

The orders Primata and Carnivora are placed in the same class,i.e.

Identify the true statements from below $:-$
$(a)$ Convolvulaceae and Solanaceae belong to the same order
$(b)$ Animals,mammals,and dogs represent different taxa at same levels
$(c)$ Musca domestica is the scientific name of housefly
$(d)$ Taxonomic categories are distinct biological entities