Which of the following are vestigial organ of man ?

Options

A. Hair, olecranon process, coccyx, and patella
B. Coccyx, vermiform appendix, and ear muscles
C. Wisdom tooth, mammary gland, coccyx, and patella
D. Coccyx, hair ,ear ossicles, and vermiform appendix

Answer

To determine which of the following are vestigial organs in humans, we need to understand what vestigial organs are and analyze the options provided.

### Step-by-Step Solution:

1. **Understanding Vestigial Organs**:
- Vestigial organs are those that have lost their original function through the course of evolution. They are present in the body but do not serve any significant purpose.

2. **Analyzing the Options**:
- Let's evaluate the given options one by one.

3. **Option 1**: Hair, Olecranon Process, Coccyx, and Patella
- **Hair**: Not a vestigial organ; it serves important functions like protection and temperature regulation.
- **Olecranon Process**: Not a vestigial organ; it is a functional part of the elbow joint.
- **Coccyx**: Yes, this is a vestigial organ; it is the remnant of a tail.
- **Patella**: Not a vestigial organ; it serves a protective function for the knee joint.
- **Conclusion for Option 1**: Incorrect, as only the coccyx is vestigial.

4. **Option 2**: Coccyx, Vermiform Appendix, and Ear Muscles
- **Coccyx**: Yes, this is a vestigial organ.
- **Vermiform Appendix**: Yes, this is considered vestigial as it does not have a significant function in digestion.
- **Ear Muscles**: Yes, these are also considered vestigial as they are too small to move the ears effectively.
- **Conclusion for Option 2**: Correct, all three are vestigial organs.

5. **Option 3**: Wisdom Tooth, Mammary Gland, Coccyx, and Patella
- **Wisdom Tooth**: Yes, this is a vestigial organ as it is not functionally necessary for modern humans.
- **Mammary Gland**: Not a vestigial organ; it has a crucial function in lactation.
- **Coccyx**: Yes, this is a vestigial organ.
- **Patella**: Not a vestigial organ; it serves a protective function.
- **Conclusion for Option 3**: Incorrect, as mammary gland and patella are not vestigial.

6. **Final Conclusion**:
- The only option that contains all vestigial organs is **Option 2**: Coccyx, Vermiform Appendix, and Ear Muscles.