Incorrect statement about non-specific immunity

Options

A. it includes barriers of defence
B. it developes by contract with pathogen
C. It operates faster
D. it is inherited

Answer

To determine the incorrect statement about non-specific immunity, we will analyze each option provided:

1. **Understanding Non-Specific Immunity**: Non-specific immunity, also known as innate immunity, is the body's first line of defense against pathogens. It includes various barriers and mechanisms that do not require prior exposure to a specific pathogen to be effective.

2. **Evaluating the Options**:
- **Option A: It includes barriers of defense**: This statement is correct. Non-specific immunity includes physical barriers such as skin and mucous membranes, which act as the first line of defense against pathogens.

- **Option B: It dwells by contact with pathogen**: This statement is incorrect. Non-specific immunity does not require contact with a pathogen to function. The barriers are always present and act immediately upon exposure to any pathogen.

- **Option C: It operates faster**: This statement is correct. Non-specific immunity operates quickly, providing an immediate response to pathogens.

- **Option D: It is inherited**: This statement is also correct. Non-specific immunity is present at birth and can include inherited factors, such as certain antibodies transferred from mother to child.

3. **Conclusion**: The incorrect statement about non-specific immunity is **Option B: It dwells by contact with pathogen**.