Question

Double-headed snake is
(A)Typhlos
(B)Ptyas
(C)Eryx
(D)Bungarus

Answer 1

Hint The snake from the above options which was found to have 2 heads also is also commonly known as the red sand boa. It is known to be a species of the nonvenomous snake in the subfamily Erycinae of the family Boidae.

Complete answer: Eryx johnii is additionally referred to as red sand boa. it's found in the whole of India excluding Northeastern states. Its head is depressed on the snout with smooth scales not broader than the neck. They usually have a very small and thick tail which at the end has a blunt head-like tip hence also called Two-Headed Snake.

Additional Information: The Snakes are elongated, legless, carnivorous reptiles of the Serpentes. Like many other squamates, snakes are ectothermic, amniote vertebrates that are found to be covered in overlapping scales. Many species of the snakes are found to have skulls, along with several more joints than their lizard ancestors, which enables them to swallow prey, which is much larger than their heads. To accommodate the bodies of snakes, which are narrow snakes' paired organs, for example, kidneys found one in front of the other rather than side by side, and most have just one functional lung. Some species are also present there in nature which retain a pelvic girdle, along with a pair of vestigial claws on either side of the cloaca. The Lizards have found to be evolved elongate bodies but without limbs or if have limbs with greatly reduced limbs which is about 25 times independently via convergent evolution, resulting in many lineages of legless lizards. The legless lizards will resemble the snakes, but it was found that several common groups of legless lizards have eyelids and also external ears, which was absent in snakes, although this rule isn't universal.

So, the correct answer is ‘Eryx’.

Note: The species Eryx johnii is endemic to Iran, Pakistan, and India. There are not any subspecies of Eryx johnii found which are recognized as valid. The name, johnii, to this species was assigned in the honor of the naturalist who is from German, Christoph S.John, who was a missionary in India from the year 1771 until his death.