UPSC CSE Prelims
Question 53
Which one of the following statements best describes the role of B cells and T cells in the human body ?
View correct answer and explanation
Correct answer: D
Correct Option: D (They protect the body from the diseases caused by pathogens.)
Explanation: B lymphocytes make antibodies and T lymphocytes coordinate or kill infected cells; both are components of adaptive immunity against pathogens.
Option-wise Analysis:
A. Incorrect-Allergic reactions involve immune cells, but preventing allergens is not the main joint function of B and T cells.
B. Incorrect-Pain and inflammation control is not their defining shared role; some T cells can regulate inflammation.
C. Incorrect-Many B/T cell responses activate defence rather than functioning as general immunosuppressants.
D. Correct-they recognise and defend against bacteria, viruses and other disease-causing agents.