Question

Which of the following is NOT a unique feature of acquired immunity?

• A. Discrimination between self and non-self
• B. Non-specicity
• C. Memory
• D. Diversity

Hint:

Acquired immunity is specific, diverse, and has memory, distinguishing it from the non-specific responses of innate immunity.

Answer 1

The Correct Option is B

Step 1: Understanding acquired immunity.
Acquired immunity is characterized by specificity (targeting specific pathogens), memory (ability to remember pathogens for quicker responses), and diversity (ability to respond to various antigens). Non-specificity is a feature of innate immunity, not acquired immunity.
Step 2: Analyzing the options.
(A) Discrimination between self and non-self: Incorrect, this is a key feature of acquired immunity.
(B) Non-specicity: Correct, non-specificity is not a feature of acquired immunity, which is highly specific.
(C) Memory: Incorrect, memory is a defining characteristic of acquired immunity.
(D) Diversity: Incorrect, acquired immunity has the ability to respond to a wide variety of antigens.
Step 3: Conclusion.
The correct answer is (B) Non-specicity, as it is a characteristic of innate immunity, not acquired immunity.