Class 12th Biology 2016 Set1 Outside Delhi Board Paper Solution
Question 15
It is generally observed that the children who had suffered fro m chicken - pox in their childhood may not contract the same disease in their adulthood. Explain giving rea- sons the basis of such an immunity in an individual. Name this kind of immunity.
Answer
This kind of immunity is called acquired immunity. This immunity is characterised by the memory for the pathogen so a childhood disease such as chicken-pox is not contracted in adulthood.
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