What is not true about innate immunity?

Options

A. (a) First line of defence
B. (b) Includes all defence elements with which an individual is born
C. (c) Lyzozyme and interferons are part of it
D. (d) Specific in nature

Answer

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the statement that is NOT true about innate immunity. This requires us to evaluate various statements regarding innate immunity.

2. **Define Innate Immunity**: Innate immunity is the body's first line of defense against pathogens and is present from birth. It includes physical barriers, secretions, and general immune responses.

3. **Evaluate Each Statement**:
- **Statement A**: "It is the first line of defense."
- This is true. Innate immunity acts as the first line of defense against infections.

- **Statement B**: "It includes all defense elements with which an individual is born."
- This is also true. Innate immunity comprises all the defense mechanisms that a person is born with.

- **Statement C**: "Lysozyme and interferons are part of it."
- This statement is true as well. Lysozymes break down bacterial cell walls, and interferons help combat viral infections.

- **Statement D**: "Innate immunity is specific in nature."
- This statement is NOT true. Innate immunity is nonspecific; it does not target specific pathogens but rather responds to all pathogens in a similar manner.

4. **Conclusion**: Since statement D is the only false statement regarding innate immunity, the answer to the question is D.

### Final Answer:
**D**: Innate immunity is specific in nature.

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