define immunity. explain natural and acquired immunity

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Solution

Immunity is state of body where there are adequate strength to fight against diseases, pathogens and other unwanted biological agents that enter the body.

Natural immunity is the immunity which is provided by the body system of its own. Acquired immunity is the type of immunity provided from outside in form of medicines and other chemicals when natural immunity fails to work.

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	LIST I		LIST II
a	Natural active immunity	i	Develops due to to vaccinaton
b	Natural passive immunity	ii	Antirabies serum
c	Artificial active immunity	iii	Acquired after smallpox infection
d	Artificial passive immunity	iv	Transferred from mother to child

The immunity provided by vaccines is acquired or adaptive in nature.

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