Tag: aves

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Multiple choice zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

Scaly anteater is

  1. Eutherian

  2. Metatherian

  3. Prototherian

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
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'.

Multiple choice zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

Order primate contains

  1. Shrew and Hedge Hog

  2. Bats and Vampires

  3. Monkey and Man

  4. Horse and Zebra
Reveal answer Fill a bubble to check yourself
C Correct answer
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'.

Multiple choice zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

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

  1. Eutheria

  2. Metatheria

  3. Prototheria

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
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'.