A: Sella tursica is located in the skull which lodes the pituitary gland .
R: IT is a depression present in sphenoid bone .

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion , then mark
B. If Both Assertion & Reason are true but the reason is not the correct exlanation of the assertion then mark
C. If Assertion is true statement but Reason is false then mark
D. If both Assertion and Reason are false statements then mark

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion (A)**:
- The assertion states that "Sella tursica is located in the skull which lodges the pituitary gland."
- This statement is true because the sella turcica is indeed a structure in the skull that houses the pituitary gland, often referred to as the "master gland" due to its role in regulating various hormonal functions in the body.

**Hint**: Identify the role of the sella turcica in relation to the pituitary gland.

2. **Understanding the Reason (R)**:
- The reason states that "It is a depression present in the sphenoid bone."
- This statement is also true. The sella turcica is a depression (or concave area) located in the sphenoid bone of the skull.

**Hint**: Recall the anatomical location of the sella turcica and its relationship to the sphenoid bone.

3. **Evaluating the Relationship Between A and R**:
- While both the assertion and the reason are true, we need to determine if the reason explains the assertion.
- The assertion describes the location and function of the sella turcica, while the reason describes its anatomical nature (being a depression in the sphenoid bone). The reason does not provide an explanation for why the sella turcica lodges the pituitary gland.

**Hint**: Consider whether the reason clarifies or supports the assertion.

4. **Conclusion**:
- Since both statements are true, but the reason does not explain the assertion, the correct answer is that the assertion and reason are true, but the reason does not explain the assertion.

**Final Answer**: Option B - Assertion and reason are true, but the reason does not explain the assertion.