Assertion : Patella bone of knee is a sesamoid bone
Reason : Skull bones and clavical bones are membranous bones

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are false.

Answer

**Step-by-Step Solution:**

1. **Understand the Assertion**: The assertion states that the patella bone of the knee is a sesamoid bone.
- **Explanation**: Sesamoid bones are bones that are embedded within a tendon or muscle. The patella, also known as the kneecap, is indeed classified as a sesamoid bone because it is located within the tendon of the quadriceps muscle.

2. **Analyze the Reason**: The reason provided is that skull bones and clavicle bones are membranous bones.
- **Explanation**: Membranous bones are formed directly from mesenchyme (a type of connective tissue) without a cartilage stage. The skull bones and parts of the clavicle do develop in this manner, making this statement true.

3. **Determine the Relationship**: Now, we need to evaluate whether the reason correctly explains the assertion.
- **Explanation**: While both statements are true, the reason does not explain the assertion. The assertion is specifically about the patella being a sesamoid bone, while the reason discusses skull and clavicle bones, which are unrelated to the classification of the patella.

4. **Conclusion**: Based on the analysis, the correct option is that both the assertion and reason are true, but the reason is not a correct explanation of the assertion.

**Final Answer**: Both assertion and reason are true, but reason is not a correct explanation of the assertion.

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