Q.

Which of the following organisms bear hollow and pneumatic long bones?

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a

Ornithorhynchus

b

Neophron

c

Hemidactylus

d

Macropus

answer is B.

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Detailed Solution

In Aves (e.g., Neophron), endoskeleton is fully ossified (bony) and the long bones are hollow with air cavities (pneumatic).

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