Assertion (A): Innate immunity is non-specific type of defence present at the time of birth.
Reason (R): Saliva, tears and sweat act as physiological barriers for innate immunity.

Options

A. Both A and R are true and R is the correct explanation for A.
B. Both A and R are true, but R is not the correct explanation for A.
C. A is true and R is false.
D. A is false and R is true.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Assertion (A):**
- The assertion states that "Innate immunity is a non-specific type of defense present at the time of birth."
- This is true because innate immunity is indeed the body's first line of defense against pathogens and is present from birth. It does not target specific pathogens but provides a general defense.

2. **Understanding the Reason (R):**
- The reason states that "Saliva, tears, and sweat act as physiological barriers for innate immunity."
- This is also true. Saliva, tears, and sweat contain enzymes and other substances that help prevent the entry and growth of pathogens, thus acting as physiological barriers.

3. **Evaluating the Relationship between Assertion and Reason:**
- While both the assertion and reason are correct, the reason does not provide a direct explanation for the assertion. The assertion describes what innate immunity is, while the reason gives examples of components of innate immunity.

4. **Conclusion:**
- Both statements are true, but the reason does not justify the assertion. Therefore, the correct conclusion is that the assertion is correct, the reason is correct, but the reason is not the correct explanation of the assertion.

**Final Answer:**
Both Assertion (A) and Reason (R) are correct, but the reason does not explain the assertion.

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