Scientist who introduced binomial nomenclature is-
(a) Charles Darwin
(b) Carolus Linnaeus
(c) Robert Hooke
(d) Gregor Mendel

Correct Answer: (b) Carolus Linnaeus

Explanation:

 Binomial means having two terms.  It is the biological system of naming the organisms in which the name is composed of a two-term naming system. It uses two different terms to name the species, plants, animals, and living organisms. It is also known as Binary Nomenclature.

The two terms consist of a generic epithet which is a genus (category) of that species, and a specific epithet that indicates the species itself. This two-term naming system can also use some other different languages to create such scientific names.

These scientific names are unique and help in identifying organisms anywhere in the world. 

Example: Rana Temporaria ( Common Frog)

Here, Rana is the generic name and Temporaria is the specific name.