Which one of the following organisms bears hollow and pneumatic long bones?

Options

A. Hemidactylus
B. Macropus
C. Ornithorhynchus
D. Neophron

Answer

D

Explanation

• Endoskeleton is fully ossified (bony) and the long bones are hollow with air cavities (pneumatic) in Aves e.g., Neophron (vulture).
• Hemidactylus (Wall lizard) belong to class Mammalia.
• Macropus (Kangaroo) and Ornithorhynchus (Platypus) are members of class Reptilia.