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Solution


Q.

Select the incorrect statement with respect to acquired immunity.                        [2022]
1 Primary response is produced when our body encounters a pathogen for the first time.  
2 Anamnestic response is elicited on subsequent encounters with the same pathogen.  
3 Anamnestic response is due to memory of first encounter.  
4 Acquired immunity is non-specific type of defense present at the time of birth.  

Ans.

(4)

Acquired immunity is specific to pathogen. Innate immunity is non-specific type of defence present at the time of birth.