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Class Aves - Characteristic Features MCQ - Practice Questions with Answers

Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET

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  • 23 Questions around this concept.

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Class Aves - Characteristics Features
  • This class includes Birds
  • Birds have streamlined bodies covered with feathers.
  • Their forelimbs are modified into wings.
  • The hind limbs are covered with scales and help in walking, swimming or clasping tree branches.
  • Skin is dry. There is no gland. Except preen gland (oil glands) at the base of the tail
  • They have a bony endoskeleton. They have light and porous bones called pneumatic bones to assist flight.
  • They have a monocondylic skull.
  • They have a strong breast bone called keel to which the flight muscles are attached.
  • They have a four chambered heart.
  • They are warm blooded.
  • They are dioecious. Fertilization occurs internally. They are oviparous. 
  • The jaws are modified to form beak.
  • They lack urinary bladder.
  • They are uricotelic.
  • They consist of additional chambers, Crop and gizzard. Three chambered cloaca.
  • Examples : Corvus (Crow), Columba (Pigeon), Psittacula (Parrot), Struthio (Ostrich), Pavo (Peacock), Aptenodytes (Penguin), Neophron (Vulture)

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Class Aves - Characteristics Features

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