Which of the following sets represents vestigial organs

Options

A. Vermiform appendix, body hair and patella
B. Wisdom teeth, body hair and atlas vertebra
C. Ear muscles, cochlea and coccyx
D. Vermiform appendix, ear muscles and coccys.

Answer

To determine which set represents vestigial organs, we need to analyze each option provided in the question. Vestigial organs are those that have lost most or all of their original function through the course of evolution.

### Step-by-Step Solution:

1. **Understanding Vestigial Organs**:
- Vestigial organs are remnants of structures that had important functions in ancestors but have lost their original purpose in the current organism.
- Examples in humans include the vermiform appendix, wisdom teeth, and tailbone (coccyx).

2. **Analyzing Each Option**:
- **Option A**: Vermiform appendix, body hair, and patella.
- The vermiform appendix is a vestigial organ, but body hair is not considered vestigial in humans, and the patella (kneecap) is a functional bone. Therefore, this option is incorrect.

- **Option B**: Wisdom teeth, body hair, and atlas vertebrae.
- Wisdom teeth are vestigial, but body hair is not, and the atlas vertebrae are functional. Hence, this option is also incorrect.

- **Option C**: Ear muscles, cochlea, and cortex.
- Ear muscles (pinna muscles) are vestigial, but the cochlea is a functional part of the ear, and the cortex refers to the outer layer of an organ, which is not vestigial. Thus, this option is incorrect.

- **Option D**: Vermiform appendix, ear muscles, and cortex.
- The vermiform appendix and ear muscles are both considered vestigial organs. However, the cortex is not a vestigial organ. This option is incorrect.

3. **Identifying the Correct Option**:
- After analyzing all options, it appears that none of the options provided are entirely correct based on the definitions and examples of vestigial organs. However, if we consider the most accurate representation, **Option D** includes two recognized vestigial organs (vermiform appendix and ear muscles) and is the best choice among the given options.

### Conclusion:
The correct answer is **Option D**: vermiform appendix, ear muscles, and cortex, as it includes two known vestigial organs.