Tag: evs

Questions Related to evs

Which of the following is distantly related among each other?

  1. Crocodiles.

  2. Snakes.

  3. Tuataras.

  4. Turtles.


Correct Option: B

Snakes cannot shed their skin.

  1. True

  2. False


Correct Option: B
Explanation:

The given statement is false. The molting of the skin occurs regularly in snakes. This is when old skin is outgrown. It is called shedding or ecdysis. Snakes will rub against rough surfaces to shed their skin. A shed skin is much longer than the snake that shed it, as the skin covers the top and bottom of each scale. 

When tail is cylindrical and ventral scales do not extend the entire width of the belly, the snake is 

  1. Non-Poisonous

  2. Definitely Poisonous

  3. deadly Poisonous

  4. Either Poisonous or Non-Poisonous


Correct Option: A
Explanation:

The most important differences between poisonous and non poisonous snakes include :

1. Poisnous snakes have large ventral scales covering the entire extent of the belly. Non-poisnous snakes have smaller scales absent over belly.
2. Poisnous snakes have a compressed tail while it is not compressed in non-poisnous snakes.
3. Fangs of poisonous snakes are hollow like hypodermic needle while they are short and solid in non-poisonous snakes.
Looking at the given characteristics, the correct option is 'Non-Poisnous'.

Snake charmer hypnotize snake by

  1. Playing Pungi (been)

  2. Playing basoon

  3. Playing cornet

  4. None of the above


Correct Option: A
Explanation:

Snakes can't hear, they can only feel the vibrations. It dances to the movement of pungi which is caused by it's mimic neurons and not to the sound of pungi.

So, the correct option is 'Playing Pungi'.

How does the male snake locate the female for breeding?

  1. By looking for her trail marks

  2. By sight

  3. By smell

  4. By hearing her movements


Correct Option: C
Explanation:

The slippery female snake will discharge a pheromone noticeable all around that creates a unique fragrance that starts wind mating season. Male snakes from all over will smell the fragrance and will endeavor to mate with the female.

So, the correct option is 'By smell'.

Snakes live everywhere in the earth except

  1. India

  2. Ireland

  3. New zealand

  4. None of the above


Correct Option: B
Explanation:

No variety of snakes are found on the Ireland. It is because during the last ice age, the whole of Ireland and mainland  was permanently covered with snow and ice. It is highly unlikely that any wildlife, which might have been in Ireland before this ice age, survived this period. When the climate warmed up again, snakes would have been able to recolonise Britain from the south, in any case there were land bridges to the continent from time to time. They would not, however, unless deliberately transported, be able to reestablish themselves in Ireland.

So, the correct option is 'Ireland'.

Identify the non venomous snake

  1. Python

  2. Kobra

  3. Anaconda

  4. Viper


Correct Option: A,C
Explanation:

Venomous snakes are capable of injecting venom by their bite. They use venom for defense and killing prey. Viper and Kobra are examples of venomous snakes.

Python and anaconda are non venomous snakes. They kill their prey by crushing them in their coils and slowly squeezing them to death.
So, the correct options are 'Anaconda' and 'Python'.

How do snakes eat?

  1. Chew their food

  2. Swallow the whole food

  3. They first digest and then swallow their food

  4. None of these


Correct Option: B
Explanation:

  • Snakes are carnivorous. Snakes do not have the right kind of teeth to chew their food so they eat their catch whole. Their jaw is structured in such a way that it allows the mouth to open wider than their own body in order to swallow their prey whole.

So, the correct option is 'Swell their whole food'.

Snake possess external ear.

  1. True

  2. False


Correct Option: B
Explanation:
Snakes have no visible ear. They have vestiges of the apparatus for hearing inside their heads, and that setup is attached to their jaw bones, so they feel vibrations very well and may hear low-frequency airborne sounds.

Which of the following is the ancestor of snake?

  1. Chameleon

  2. Lizard

  3. Crocodile

  4. None of the above


Correct Option: B
Explanation:
Many evolutionary biologists believe that snakes evolved from lizard like ancestors. This has been established by comparing skulls of different lizards and snakes that have existed on earth and comparing body shapes. Also, few fossils of snakes having 4 legs like legs have been found indicating further common ancestry.
So, the correct option is 'Lizard'.