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Q.

Rhamphotheca in birds is a

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a

part of pectoral girdle

b

part of vertebral column

c

covering of feathers

d

horny covering on beak

answer is D.

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Detailed Solution

Horny covering on beak of Aves is called rhamphotheca. It is one of the components of exoskeleton and ectodermal in origin.

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