Lungs without air sacs occur in

Options

A. Sparrow
B. Pea Cock
C. Penguin
D. Falcon

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which bird has lungs without air sacs. Air sacs are extensions of the lungs in birds that help increase respiratory efficiency.

2. **Identifying the Options**: The options provided are:
- A) Sparrow
- B) Peacock
- C) Penguin
- D) Falcon

3. **Analyzing Air Sacs**:
- Air sacs are present in most birds to enhance their respiratory system, especially those that are capable of flight. They provide a larger surface area for gas exchange and are crucial for maintaining the high metabolic demands of flying.

4. **Evaluating Each Option**:
- **Sparrow**: A small bird that can fly and has air sacs.
- **Peacock**: A large bird that can fly short distances and has air sacs.
- **Penguin**: A flightless bird that does not have the need for air sacs due to its lifestyle.
- **Falcon**: A bird of prey known for its flying ability and has air sacs.

5. **Conclusion**: Since sparrows, peacocks, and falcons are all capable of flight and possess air sacs, the only bird in the list that does not have air sacs is the penguin.

6. **Final Answer**: The correct answer is **Penguin**.

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