Select the incorrect statement with respect to acquired immunity.
Primary response is produced when our body encounters a pathogen for the first time.
Anamnestic response is elicited on subsequent encounters with the same pathogen.
Anamnestic response is due to memory of first encounter.
Acquired immunity is non-specific type of defense present at the time of birth.
Option (4) is the correct answer as acquired immunity is a specific type of defence which is not present at the time of birth. Option (3), (1) and (2) are true statements and hence cannot be the answer. Anamnestic response or secondary immune response is a highly intensified response due to memory of first encounter. When our body encounters a pathogen for the first time then the body elicits the primary immune response. When there is a subsequent encounter with the same pathogen, secondary or anamnestic immune response is elicited.
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