Tag: classifications of chordata

Questions Related to classifications of chordata

Which of the following is not a true amphibian?

zoology animal diversity - ii (phylum: chordata) amphibia and reptilia amphibia classifications of chordata

  1. Tortoise

  2. Frog

  3. Salamander

  4. Bufo

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Correct Option: A
Explanation:

Tortoises are considered as reptiles and not amphibians because of the following characteristics:

  • They are vertebrates that is they have a backbone.
  • They are covered in scales.
  • They breathe through lungs.
  • They lay eggs.
  • And they are cold blooded which means they cannot regulate their body temperature.
And all these characteristics are shown by the organisms which fall under the category of reptiles and not amphibians. 

Which of the following statement is true for Ichthyophis?

zoology animal diversity - ii (phylum: chordata) amphibia and reptilia amphibia classifications of chordata

  1. It is limbless reptile, who lives in water

  2. It is limbless amphibian, who lives in water

  3. It is limbed, lives on land

  4. It is limbless animal and amphibious in nature

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Correct Option: B
Explanation:
  • Ichthyophis is a genus of caecilians (a group of limbless, serpentine amphibians).
  • They are found in moisturized or wet tropical habitats.
  • So, the correct answer is 'It is a limbless amphibian, who lives in water'.

In which of the following subclasses of reptiles the skull has a solid roof?

zoology animal diversity - ii (phylum: chordata) amphibia and reptilia amphibia classifications of chordata

  1. Anapsida

  2. Diapsida

  3. Synapsida

  4. Parapsida

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Correct Option: A
Explanation:

Anapsid is a subclass of reptiles. An anapsid is an amniote whose skull does not have openings near the temples. The skull of anapsid are made by solid roof. It includes turtles and extinct Permian forms. 

Therefore, the correct answer is option A.

Excretory organs of Earthworm are .....................

zoology animal diversity - ii (phylum: chordata) amphibia and reptilia amphibia classifications of chordata

  1. Malpighian tubules

  2. Nephridia

  3. Kidneys

  4. Flame cells

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Correct Option: B

An aquatic animal that lays eggs only on land is

zoology animal diversity - ii (phylum: chordata) amphibia and reptilia amphibia classifications of chordata

  1. Fish

  2. Frog

  3. Sharks

  4. Turtles

Show answer
Correct Option: D
Explanation:

Turtles are characterized by a special bony or cartilaginous shell developed from their ribs and acting as a shield. Before the turtle lay their eggs, nearly all turtles prepare a nest on land. During the last weeks of gestation, the pregnant female spends less time in the water and more time on land, smelling and scratching at the ground in search of the perfect place to lay her eggs.

So, the correct answer is 'Turtles'.

Largest reptile in the world

zoology animal diversity - ii (phylum: chordata) amphibia and reptilia amphibia classifications of chordata

  1. Dragon

  2. Anaconda

  3. Crocodile

  4. Python

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Correct Option: B