Pneumatic bones are found in

Options

A. Shark
B. Rana
C. Pigeon
D. Whale

Answer

**Step-by-Step Solution:**

1. **Understanding Pneumatic Bones:**
- Pneumatic bones are characterized by the presence of air spaces within them. This unique structure makes the bones lighter, which is essential for flight.

2. **Identifying the Organisms:**
- The question provides four options: shark, rana (frog), pigeon, and whale. We need to determine which of these organisms possess pneumatic bones.

3. **Analyzing Each Option:**
- **Shark:** Sharks are cartilaginous fish and do not have pneumatic bones. Therefore, this option is incorrect.
- **Rana (Frog):** Frogs are amphibians and also do not possess pneumatic bones. This option is incorrect as well.
- **Pigeon:** Pigeons are birds. Birds are known for having pneumatic bones, which aid in flight by reducing body weight. This option is correct.
- **Whale:** Whales are mammals and do not have pneumatic bones. Thus, this option is incorrect.

4. **Conclusion:**
- After analyzing all the options, the only organism that possesses pneumatic bones is the pigeon.

**Final Answer:**
- Pneumatic bones are found in **pigeon**.

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