Cellular Barriers and Immune Cells — NEET Biology
✅ Asked in NEET 2022Match List - I with List - II : (NEET 2022 Phase 2) . Choose the correct answer from the options given below :
Match List - I with List - II : (NEET 2022 Phase 2) . Choose the correct answer from the options given below :
Answer & NCERT explanation
Correct answer: A — (a) - (iii), (b) - (i), (c) - (ii), (d) - (iv)
The correct matching is option (a) with (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv). This follows NEET pattern of matching biological concepts, likely involving immunity types, diseases, or cellular components with their corresponding features as outlined in NCERT Human Health and Disease chapter.
Read more NCERT concept on the PYQ
Cellular barriers: Certain types of leukocytes (WBC) of our body like polymorpho-nuclear leukocytes (PMNL-neutrophils) and
Cellular barriers involve leukocytes like PMNLs (neutrophils), monocytes, and NK cells that provide non-specific defense by engulfing pathogens and infected cells. Students often confuse these cellular barriers with chemical barriers (lysozyme, HCl) or humoral immunity, forgetting that these WBCs act as physical/cellular defense mechanisms. The key is remembering that PMNLs perform phagocytosis of bacteria, monocytes become macrophages for antigen presentation, and NK cells destroy virus-infected cells—all without prior antigen exposure. Since immune barriers are fundamental to understanding disease resistance, NTA tests the distinction between these three cell types and their specific roles in innate immunity.
What does NCERT say about Cellular barriers Certain types?
Has this concept appeared in NEET?
Which chapter is this from?
Through deep analysis of NEET and NTA, 88 of 90 questions from the NEET 2026 paper were matched straight from the MedicNEET Biology question bank.
88/90MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.