The presence of hollow and light bones is a characteristic feature of class ……………
A
Porifera
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B
Echinodermata
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C
Aves
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D
Arthropoda
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Solution
The correct option is C Aves Aves are the class of vertebrates that are characterized by the presence of feathers and wings. All birds fall under this class. They have long hollow bones that help them to fly. The forelimbs are modified for flight.