Question

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

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

Answer 1

The correct option is B

Neophron

The correct option is B

Explanation for the correct answer:

1. The endoskeleton is entirely ossified (bony) in Aves (e.g., Neophron), while the long bones are hollow with air spaces (pneumatic).
2. Animals belonging to the Aves class have hollow and pneumatic long bones.
3. Neophron is an example (vulture).

Explanation for the incorrect answer:

Option A:

1. Macropus (Kangaroo) belong to class Mammalia.
2. The typical kangaroos and wallabies belong to the species Macropodidae.

Option C:

1. Ornithorhynchus (Platypus) belongs to the class Mammalia.
2. Genus of egg-laying mammals that includes just the platypus (and is coextensive with the Ornithorhynchidae family).

Option D:

1. Hemidactylus (Wall lizard) is a member of class Reptilia.
2. Hemidactylus is a common house lizard that may be found in any household. In the habit of becoming nocturnal.
3. They hibernate beneath wood, logs, and wall cracks during the winter.
4. They've developed the ability to walk on walls. Insects and tiny invertebrates are their main sources of food.
5. It's a diapsid that moves quickly.

Final answer: Neophron bears hollow and pneumatic long bones