Which one of the following organisms bears hollow and pneumatic long bones?
Neophron
Hemidactylus
Macropus
Ornithorhynchus
Hollow and pneumatic long bones are present in animals that belong to class Aves e.g., Neophron (vulture). Ornithorhynchus (Platypus) and Macropus (Kangaroo) belong to class Mammalia. Hemidactylus (Wall lizard) is a member of class Reptilia.
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