Question

Which of the following characters is not related to Indian chain viper?
A. Subcandals are present in two rows
B. An arrow mark (t) is present on the head
C. Head is triangular covered by small scales
D. Large black rings occur in three rows on the dorsal surface of the body

Answer 1

Indian chain viper also called Russell’s viper. It could be a venomous snake. The species is native to the Asian sub-continent.
Classification-
Kingdom- Animalia
Phylum- Chordata
Class-Reptilia
Order- Squamata
Sub-order- Serpentes
Family- Viperidae
Genus- Daboia
Species- D. russeii

Complete answer: Features of Russell’s serpent snake-
1. The body is roofed with keeled scales.
2. Yellow to dark brown with almond form black patches.
3. Terrestrial snake and nocturnal animal.
4. The arrow mark on the top is its distinctive character.
5. Produces sound phoor-phoor hence known as Phoorsa.
6. The coupling season is from winter to summer.
7. Survive up to fifteen years.
So, the solution to the given question is B. arrow mark (t) is present on the head.

Additional information:
Russell’s serpent is called in the honor of herpetologist Patrick Russell. It feeds totally on rodents. The bite of Russell’s serpent can be fetal. Is a nocturnal animal however, throughout the cold season, it becomes active within the day.

Note: The Russell's viper head is and distinct from the neck with a protracted, planar, and triangular form, and enormous, conspicuous nostrils on both sides of the snout. It produces the sound phoor-phoor hence regionally known as Phoorsa. Native species of Asian nations namely India, China, Myanmar, Pakistan, Nepal.