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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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In aves, forelimbs are modified into wings for
Concepts Covered - 1
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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