Question

______i______ : Non - Specific type of defence : ______ii_________.
______iii_____ : Pathogen specific type of defence : _____iv_______.

• A. i - Innate immunity, ii - Obtained when encounters the pathogen, iii - Acquired immunity, iv - Present since birth
• B. i - Innate immunity , ii - Present since birth, iii - Acquired immunity, iv - Obtained when encounters the pathogen
• C. i - Acquired immunity, ii - Present since birth, iii - Innate immunity, iv - Obtained when encounters the pathogen
• D. i - Acquired immunity, ii - Obtained when encounters the pathogen, iii - Innate immunity, iv - Present since birth

Answer 1

The correct option is B i - Innate immunity , ii - Present since birth, iii - Acquired immunity, iv - Obtained when encounters the pathogen

Innate immunity is a kind of non-specific immunity present at the time of birth and is activated immediately after the pathogen attack. It includes barriers and defence mechanisms to keep the body away from foreign particles.

Barriers like physical, physiological, cellular so that pathogens can not enter the body and even if they can then cells like monocytes, etc are present to fight against pathogens.

On the other hand, acquired immunity or adaptive immunity is one that the body gains over time and is not present at birth. When the immune system encounters a pathogen it starts to adapt itself and generate pathogen specific immunity.