Which of these are absent in the modem birds?

Scales

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Feathers

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Teeth

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None of these

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Solution

The correct option is C Teeth
Characteristics of the class Aves:
Teeth are absent in jaws.
Jaws are modified into the horny beak. The beak is toothless.
An epidermal horny sheath is present on the beak, which is called as Rhamphotheca.
Scales are found only on hind limbs.
Feathers are present on wings.

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