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Question
Which one of the following is a characteristic feature of Class Aves?
Which one of the following is a characteristic feature of Class Aves?
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Solution
The correct option is A Presence of feathers
Presence of feathers is an exclusive and characteristic feature of Aves.
Four chambered heart is not only seen in birds but also in mammals.
The ability to fly is a feature of Aves, but it is not seen in all the birds as there are some flightless birds as well. There are also other animals which exhibit this ability like the bats.
Ovipary is seen in birds, but also in other animals like the amphibians, reptiles and some mammals like duck-billed platypus.
Presence of feathers is an exclusive and characteristic feature of Aves.
Four chambered heart is not only seen in birds but also in mammals.
The ability to fly is a feature of Aves, but it is not seen in all the birds as there are some flightless birds as well. There are also other animals which exhibit this ability like the bats.
Ovipary is seen in birds, but also in other animals like the amphibians, reptiles and some mammals like duck-billed platypus.
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