Question

Which of the odd one in the following Series?
A. sapiens
B. americana
C. rotundus
D. Hemidactylus

Answer 1

Hint: In biological classification, individuals' organisms are named on the basis of a system which provides specific names. The name of the organism belongs to which species is indicated by two words, the genus and species names, which are Latinized words derived from various sources. This system was introduced by Carl Linnaeus.

Complete answer:
Binomial nomenclature is a formal method of naming the species of living things. According to this system, a name is composed of two parts, both of which use Latin grammatical forms, they can be derived from other languages. In this system, the first part of the name represents the genus, and the second part represents a particular species.
sapiens is the species name of the human being whose scientific name is Homo sapiens and it is one of several species categorized into the genus Homo, but it is the only one that is not extinct. Homo sapiens are the species belonging to highly intelligent primates. Humans are the only existing members of the subtribe Hominina and they belong to the family of Hominidae. They can be classified by their characteristics of erect posture and bipedal locomotion.
americana is also a species name whose scientific name is Ficus americana. So, the genus is Ficus. It is commonly known as West Indian laurel fig or Jamaican cherry fig. Ficus americana is a tree that belongs to the family Moraceae and it is commonly found in the Caribbean, in the north of Mexico, Central, and South America, and southern Brazil.
rotundus is a species name of Desmodus rotundus which is commonly known as the common vampire bat. They are small, leaf-nosed bat and native to Latin America. They are mainly feeding on the blood of livestock. These bats are the carrier of rabies.
Hemidactylus is the genus of the common gecko family. The species are typically known as a common lizard. They are generally found in all the tropical regions of the world.
As sapiens, americana and rotundus are the specific names and Hemidactylus is the generic name, therefore Hemidactylus is the odd one.

Therefore, the correct option is option D.

Note: Binomial nomenclature is the system of naming the species of living things. This name has two parts, one is a specific name and the other is a generic name. Here, sapiens is the specific name of Homo sapiens. americana is the specific name of Ficus americana and rotundus is the specific name of Desmodus rotundus. But the Hemidactylus is the generic name of a common lizard.