Give the binomial nomenclature of the given biological species?
A. Solanum tuberosum
B. Allium cepa
C. Aloe vulgaris
D. Azadirachta indica

Hint: Binomial nomenclature is the biological method of naming an organism may it be plants, animals or humans. In this system, the name comprises of two terms the first is the genus name and the second is the species name. It tells us that the respective species belongs to which genus.

Complete answer:
To solve this question, we must know about the system of binomial nomenclature and the names of different species.
- The species is a group of similar organisms which are capable of interbreeding.
- The genus is the group of interrelated species which share a common ancestry.
- The binomial nomenclature is a system in which the genus name is written followed by the species name. It helps us to understand that the particular species belongs to which ancestral group or to whom it is closely related.
- The given figure is of the common aloe vera plant whose botanical name is Aloe Vulgaris. It is a succulent plant belonging to the genus Aloe. It is a green perineal plant. It is widely cultivated and used for its medicinal value. Its gel obtained from the fleshy stem is used as antiseptic and provides soothing effect to the skin. This plant is mostly found in the tropical region.
1. Solanum tuberosum- It is the biological name for potato.
2. Allium cepa- It is the biological name for onion.
3. Azadirachta indica- It is the botanical name for neem

Hence the correct answer is C.

Note: Carolus Linnaeus came up with the system of binomial nomenclature. He named the organisms in this fashion in order to avoid confusion in the names of the organisms if they were called by their local names. This name is universal and is used till today.