What does Parris code and Vienna code refer to?
A. Nomenclature of plants
B. Nomenclature of animals
C. Both of the above
D. Anticode

Hint: International Code of Botanical Nomenclature (ICBN) is an international organization that gives name to a newly discovered species of a particular organism. Similarly, the International Code of Nomenclature for algae, fungi, and plants or ICN is the naming method.

Complete answer:
The binomial system or two naming system nomenclature has developed in the development of taxonomy and become an important factor for naming. Before the mid-18th century, the names of plants were polynomials that meant one name was consisting of several words.
Thus, confusion started to arise. The reason behind this is increasing the need for a code of naming or nomenclature so that the confusion reduces and the naming of plants can be regulated universally. Many codes have been proposed by different scientists across the globe, but only two codes have received support in international conferences. The codes are the Paris Code and the Vienna Code – proposed in 1867 and 1905 respectively. These two codes are widely accepted by scientists and finally help in the establishment of the binomial nomenclature of plants.
Thus, the correct answer is option A-Nomenclature of plants.

Note: The binomial naming of animals is done by International Code for Zoological Nomenclature or ICZN. In the binomial nomenclature, first, the genus name is written with the first alphabet in capital letter and then the species name is written in small case. Finally, the taxonomic name should be in italics if it is typed or underlined if handwritten.