Question

Alternate bands of black and yellow colour occur in
A. Cobra
B. Rat snake
C. Krait
D. Viper

Answer 1

Snakes belong to the class Reptilian which is also called the creeping vertebrates. The reptiles were the first vertebrates fully adapted for life on dry land. Some of them live in water but they too return to land for breeding.

Complete answer: Snakes have long, cylindrical bodies without libs, movable eyelids and tympana. They are insensitive to air-borne sound but can perceive earth-borne vibrations caused by approaching feet and conveyed by lower jaw to internal ear.
The snakes are nocturnal and commonly carnivorous. The snakes hibernate in winter and also show periodical cast off the horny layer of their skin as a continuous slough. They often produce a hissing sound by forcibly expelling air through nares after inflating the lungs. They run quite fast on the rough surface. Scales on the ventral side or the curves of the body provide traction. All snakes swim by well by lateral undulations of the body and most of them can climb also.
Majority of snakes are non-poisonous. They are useful as they feed on rodents. They include rat snake, python, tree snake, fresh water snake, blind snake, etc.
Poisonous snakes have additional poison teeth called fangs, specialized for injecting poison from poison glands in their head.
The common poisonous snakes in our country are cobra, krait and viper. Alternate bands of black and yellow occur in krait. Sea snakes, rattle snakes and coral snakes are other poisonous snakes.
So, the correct answer is “Option C”.

Note:
The only remedy for their bite is an antivenom injection developed for each type of venom. Antivenins are also called antivenoms and they are antibodies against the venoms. These are used only when there is high risk of toxicity.