Tag: classifications of chordata

Questions Related to classifications of chordata

Scaly anteater is

  1. Eutherian

  2. Metatherian

  3. Prototherian

  4. None of the above


Correct Option: A
Explanation:

(A) Eutherian are mammalian clade consisting of Cretaceous. For example-Scaly anteater.

(B) Metatherian are the mammalian clade consisting of classes close to marsupials.
(C) Prototherians are the mammalian clade consisting of egg-laying monotremes.
So, the answer is 'Eutherians'.

Opossum belongs to

  1. Prototheria

  2. Metatheria

  3. Edentata

  4. Pholidota


Correct Option: B
Explanation:

Opossum is the largest order of marsupials in West hemisphere containing 103 species. Metatherials are the mammalian clade that include all mammals closely related to marsupials.

So, the correct answer is 'Metatheria'.

Presence of fins and gills is a characteristic feature of:

  1. reptiles

  2. mammals

  3. amphibians

  4. fishes


Correct Option: D
Explanation:

Fishes have fins and gills which help them swim and breathe in water.

So the correct option is D.

Order primate contains

  1. Shrew and Hedge Hog

  2. Bats and Vampires

  3. Monkey and Man

  4. Horse and Zebra


Correct Option: C
Explanation:

Order Primate contains Monkey and Man.

Shrew and Hedgehog belong to the order Eulipotyphla.
Horses and Zebra belong to the order Perissodactyla.
Bat and Vampire belong to the order Chiroptera.
So the correct answer is 'Monkey and Man'.

The scrotum is absent in organisms belonging to which infraclass of class mammalia?

  1. Eutheria

  2. Metatheria

  3. Prototheria

  4. None of the above


Correct Option: C
Explanation:

A. Eutherians are called placental mammals, in which the mothers carry their unborn.

  • In them, the scrotum is present behind the penis.
B. Metatherians are also called marsupials or pouched mammals, the young are born immature and for further development takes place in mothers pouch. in the mother's pouch. 
  • In them, the scrotum is present in front of the penis.
C. Prototherians are called egg-laying mammals.

  • In them scrotum is absent.
  • So, the correct answer is 'Prototheria'.

Limbless lizard is ____________.

  1. Draco

  2. Ophisaurus

  3. Amblyrhynchus

  4. Moloch


Correct Option: B
Explanation:

Ophisaurus ,occurs in southern Europe, is a limbless lizard 

In which of the following subclasses of reptiles, the skull has a solid roof ____________.

  1. Anapsida

  2. Diapsida

  3. Synapsida

  4. Parapsida


Correct Option: A
Explanation:

Anapsida has a solid roof due to the absence of any temporal vacuities on skull.

Ophisaurus belongs to _____________.

  1. Amphibia

  2. Pisces

  3. Reptilia

  4. Aves


Correct Option: C

A non-poisonous snake is______________.

  1. Viper

  2. Python

  3. Bungarus

  4. Sea snake


Correct Option: B
Explanation:
  • Vipers are a family of venomous snakes, the Viperidae. All have long, hinged fangs that dig deep into their prey and inject venom. 
  • Sea snakes are venomous. They are typically found in Indo-Australian and Southeast Asian waters.  
  • Bungarus is a genus of venomous elapid snakes, the kraits found in South and Southeast Asia.  
  • Pythons are a family of non-venomous snakes, the Pythonidae found in Africa and Asia. 
  • so the correct answer is option B.

Crocodile, Alligator and Tortoise belong to ___________.

  1. Chelonia

  2. Rhyncocephalia

  3. Reptilia

  4. Aves


Correct Option: C