Hard derivatives are absent in amphibians but exception is
A
Salamander larvae
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B
Xenopus
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C
Both (A) and (B)
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D
None of the above
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Solution
The correct option is C Both (A) and (B) Hard derivatives are made up of keratin and other such proteins. In the case of salamander, a keratinized epidermis is present in an adult. Keratinized epidermis and claws are present in Xenopus.