Which of the following structure is a phonoreceptor

Options

A. Organ of Corti
B. Jacobson's organ
C. Lateral line organ
D. None of these

Answer

To determine which of the following structures is a phonoreceptor, we need to analyze the options provided: Organ of Corti, Jacobson organ, lateral line organ, and none of these.

### Step-by-Step Solution:

1. **Understanding Phonoreceptors**:
- Phonoreceptors are specialized sensory structures that detect sound or vibrations. They are crucial for the auditory system in animals.

2. **Identifying the Options**:
- **Organ of Corti**: This is located in the inner ear and contains hair cells that function as auditory receptors. It is responsible for converting sound vibrations into neural signals.
- **Jacobson Organ**: Also known as the vomeronasal organ, it is involved in the detection of pheromones and chemical signals, not sound.
- **Lateral Line Organ**: Found in aquatic animals, it detects water movements and vibrations but is not specifically a phonoreceptor for sound in the air.
- **None of These**: This option implies that none of the given structures are phonoreceptors.

3. **Analyzing the Correct Answer**:
- Since the Organ of Corti is specifically designed to detect sound vibrations and is located in the inner ear, it is classified as a phonoreceptor.

4. **Conclusion**:
- The correct answer is **Organ of Corti**.

### Final Answer:
**Organ of Corti** is the phonoreceptor.