Which of these is an ear ossicle in frog

Options

A. Incus
B. Auricle
C. Malleus
D. Columella auris

Answer

To determine which of the given options is an ear ossicle in frogs, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Term "Ear Ossicle":**
- Ear ossicles are small bones located in the middle ear that help in the transmission of sound. In humans, there are three main ear ossicles: malleus, incus, and stapes.

2. **Analyze Each Option:**
- **Option A: Incus**
- The incus is one of the three ear ossicles found in humans, not frogs. Therefore, this option is incorrect.

- **Option B: Oracle**
- The oracle (or auricle) refers to the external part of the ear in humans. It is not an ear ossicle. Hence, this option is also incorrect.

- **Option C: Malleus**
- The malleus is another ear ossicle found in humans. It is not present in frogs, making this option incorrect as well.

- **Option D: Columella auris**
- The columella auris is a bony or cartilaginous structure found in frogs that serves as an ear ossicle. This option is correct.

3. **Conclusion:**
- After analyzing all the options, the correct answer is **Option D: Columella auris**, as it is the ear ossicle present in frogs.

### Final Answer:
The ear ossicle in frogs is **Columella auris** (Option D).

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