Zoology-Immunity
NEET Zoology Immunity MCQ Question
Type: MCQ-numerical-Medium-Class 12
When a host is exposed to an antigen, active immunity is initiated. If the primary response takes approximately 10 days to peak, how long would it likely take for the secondary response to peak given the presence of immunological memory?
A
2 days
B
20 days
C
15 days
D
10 days
Correct Answer
Option A
Detailed Explanation
The acquired immunity is characterized by memory, which leads to a rapid and intensified secondary response upon subsequent encounters with the same pathogen. This means the secondary response peaks much faster than the primary response, often within a few days.
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