Question

which two classification categories are used in binomial nomenclature?

a) kingdom and order
b) phylum and family
c) genus and species
d) order and class

Answer 1

Binomial = two part
nomenclature = naming system

Binomial nomenclature means two part naming system

We name things by the lowest classification categories: Genus Species
Like Homo sapiens ; Homo is our Genus and Sapiens is our species.

:-)

Answer 2

Answer:

c) genus and species

Explanation:

Binomial nomenclature is the method of scientifically naming the living organisms. Accordingly, the name of each living being consists of two words: the first word represents the name of the genus and the second word is species epithet.  

For example: according to binomial nomenclature, the scientific name of mango is: Mangifera indica

Here, Mangifera and indica represent the genus and species of the mango respectively.