Assertion : Mucus associated lymphoid tissues are specialised immune barrier located on skin.
Reason : These lymphoid tissues are located within tonsils, adenoids and Peyer's patches.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Explanation

To analyze the given question, we need to evaluate the assertion and the reason provided.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Mucus associated lymphoid tissues are specialized immune barriers located on skin."
- Mucus-associated lymphoid tissues (MALT) are indeed specialized lymphoid tissues, but they are not located on the skin. Instead, they are found in areas such as the respiratory and gastrointestinal tracts. Therefore, this assertion is **false**.

2. **Understanding the Reason**:
- The reason states that "These lymphoid tissues are located within tonsils, adenoids, and Peyer's patches."
- This statement is true. Tonsils, adenoids, and Peyer's patches are all examples of mucosa-associated lymphoid tissues (MALT) that play a role in the immune response, particularly in the mucosal surfaces of the body.

3. **Evaluating the Relationship**:
- The assertion is false, while the reason is true. The reason does not explain the assertion because the assertion incorrectly describes the location of MALT.

4. **Conclusion**:
- Since the assertion is false and the reason is true, the correct answer is **Option C**: Assertion is false and Reason is true.

### Final Answer:
The assertion is false, and the reason is true.

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