Class 5 EVS Chapter 2 HOTS Questions - A Snake Charmer’s Story

Q1: Snake possess external ear.
(a) True
(b) False
Ans: (b)
Snakes have no visible ear. They have vestiges of the apparatus for hearing inside their heads, and that setup is attached to their jawbones, so they feel vibrations very well and may hear low-frequency airborne sounds.
Hence, it is a false statement.

Q2: Snakes are not found in Antarctica, Iceland, Ireland, Greenland and New Zealand because:
(a) They are cold blooded
(b) They are carnivores
(c) They have poisonous fangs
(d) None of the above
Ans: (a)
Many carnivores are found in extremely cold areas.
Fangs are not affected by external temperatures hence they aren't contributing in the habitats of snakes.
They are cold blood or their inability to maintain a body temperature limits their existence to some areas having warm climates as they will not be able to survive in such extreme cold.
So the correct answer is A.

Q3: Which of the following is the shortest snake?
(a) Python
(b) Thread snake
(c) Cobra
(d) Rattle snake
Ans: (b)
Python and Cobra can range about several meters in length.
Adult rattle snake can vary in length from 0.5 to 2 m (1.6 to 6.6 feet), but some can grow to 2.5 m (8.2 feet).
While the thread snake is only 10 cm in length.
So the correct answer is B.

Q4: Which of the following snakes is non-venomous?
(a) Cobra
(b) Krait
(c) Viper
(d) Python
Ans: (d)
Python is a non-poisonous snake. They are found in Africa, Australia and Asia. Pythons use their sharp backward curving teeth, four rows in the upper jaw, two in the lower to grasp prey which is then killed by constriction after an animal has been grasped to restrain it, the python will quickly wrap a number of coils around it. Death occurs primarily via asphyxiation.
Therefore, the correct answer is option D.

Q5: Snake charmer hypnotize snake by:
(a) Playing pungi (been)
(b) Playing basoon
(c) Playing cornet
(d) None of the above
Ans: (a)
Snakes can't hear, they can only feel the vibrations.
It dances to the movement of pungi which is caused by its mimic neurons and not to the sound of pungi.
So, the correct option is A.

Q6: How do snakes eat?
(a) Chew their food
(b) Swallow the whole food
(c) They first digest and then swallow their food
(d) None of these
Ans: (b)
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 B.

Q7: Which of the animal possess split tongue?
(a) Lion
(b) Dog
(c) Frog
(d) Snake
Ans: (d)
Snakes possess split tongue. It is thought to be advantageous because it allows the snake to smell in three dimensions.
Since the two tips pick up odours from slightly different locations in space, the snake can detect the direction of the source of the smell.
So, the correct option is D.

Q8: Which of the following part of the snake is used for the preparation of antivenom?
(a) Skin
(b) Tongue
(c) Fang
(d) None of the above
Ans: (c)
The fangs of the snake store venom. This venom is extracted to prepare antivenom.

Q9: Snakes visit cattle sheds for:
(a) sucking milk from teats of cattle
(b) drinking spilled milk
(c) sharing cattle feed
(d) rats as food
Ans: (d)

• Snakes are well known to have rodents for food. And hence rats are of premium choice.
• Cattle sheds are filled with grains that is one of the best food for rats. And hence, snakes visit cattle sheds in search of rats.
• This also represent a small food chain as grains are products of the producers, rats are primary consumers to those grains, and snakes are the secondary consumers.
  Hence, the option(D) is the correct answer.

Q10: Which of the following organ is absent in snake?
(a) Tongue
(b) Nose
(c) Teeth
(d) Ear
Ans: (d)
The snakes lack ears (no external appendages). However, they have fully formed inner ear structures without the ear drum. The inner ear structures are attached to the jawbone which rests on the ground. The vibrations generated by the prey or predator in the vicinity of a snake are sensed by the jaws which send a signal to the brain via the inner ear.
Hence, option D is correct.

Q11: Snakes dance to the tune of snake charmer because:
(a) They are charmed by music
(b) Snake charmers flute is very melodious
(c) They are trained liked other pets
(d) They change position with the change in position of the flute
Ans: (d)
The snakes have a poorly developed sense of hearing. So, it cannot hear the snake charmer's tune but moves along with the hands and other movements made by the snake charmer.
Hence, the correct option is D.

Q12: Which of the following snake is poisonous?
(a) Cobra
(b) Krait
(c) Afai
(d) All of the above
Ans: (d)
Venomous or poisonous snakes are species capable of producing venom (poison), which is used primarily for immobilizing prey and defence.
Of the many kinds of snakes found in our country, only four types of snakes are poisonous.
They are Cobra, Common Krait, Russel’s Viper (Duboiya), Saw-scaled Viper (Afai).
So, the answer is D.

Q13: Identify the non venomous snake.
(a) Python
(b) Cobra
(c) Anaconda
(d) Viper
Ans: (a, c)
Venomous snakes are capable of injecting venom by their bite. They use venom for defence 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 A and C.

Q14: The scaly skin of snakes:
(a) Protects them from drying
(b) Scares human beings
(c) Makes them beautiful
(d) All of the above
Ans: (a)
The scaly skin of snakes plays a lot of different functions. Snakes are food for animals like eagles, hawks or foxes and to protect themselves from these animals as snakes have scales. These scales are thick and prickly, which makes it difficult for animals to bite or injure them.
Other than protection from animals, scales also protect snakes from harmful sun rays and decreases water loss.
Hence, scales protect snakes from drying.