" What is immunity ? Mention their type. "

What is a barometer ? Mention the types of barometers.

What is active immunity?

What is innate immunity? Mention any two types of innate immunity barriers.

What is passive immunity?

What is a solar cooker? Mention the type of solar cookers?

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.