Incorrect about innate immunity is :-

Options

A. present before any exposure a pathogen
B. effective from the time of birth
C. only in vertebrates
D. largely non-specific

Answer

To determine the incorrect statement about innate immunity, let's analyze the options provided in the question.

### Step-by-Step Solution:

1. **Understanding Innate Immunity**:
- Innate immunity is the body's first line of defense against pathogens and is present from birth.
- It is non-specific, meaning it responds to all pathogens in the same way.

2. **Evaluating the Statements**:
- **Statement 1**: "Innate immunity is present before any exposure to a pathogen."
- This statement is correct. Innate immunity is indeed present from birth and does not require prior exposure to pathogens.

- **Statement 2**: "Innate immunity is effective from the time of birth."
- This statement is also correct. Innate immunity is functional at birth and helps protect the body immediately.

- **Statement 3**: "Innate immunity is only invertebrates."
- This statement is incorrect. Innate immunity is present in both invertebrates and vertebrates. Vertebrates have a more complex innate immune system, but it is not exclusive to invertebrates.

- **Statement 4**: "Innate immunity is largely non-specific."
- This statement is correct. The innate immune response does not target specific pathogens but rather responds to a wide range of them.

3. **Conclusion**:
- The incorrect statement about innate immunity is that it is "only invertebrates." This is false because innate immunity is found in both invertebrates and vertebrates.

### Final Answer:
The incorrect statement about innate immunity is: "Innate immunity is only invertebrates."

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