Match List-I with List-II
| List-I | List-II | ||
| (A) | T-helper cells | (I) | Foreign bodies e.g. viruses |
| (B) | Antigens | (II) | Enhance immunological activity |
| (C) | T-cells | (III) | Produce antibodies |
| (D) | B-cells | (IV) | Destroy invaders |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (A)-(II), (B)-(I), (C)-(IV), (D)-(III)
The white blood cells (leucocytes) of the immune system identify and destroy foreign bodies and lead to the production of antibodies. There are several kinds of them.
(A) T-helper cells — this matches (II) Enhance immunological activity. T-helper cells increase immunological activity; they are the cells attacked by HIV, the virus causing AIDS.
(B) Antigens — this matches (I) Foreign bodies e.g. viruses. Antigens are the foreign bodies, such as viruses, that the white blood cells identify and destroy.
(C) T-cells — this matches (IV) Destroy invaders. T cells destroy invaders.
(D) B-cells — this matches (III) Produce antibodies. B cells produce antibodies.
NCERT (2025-26): “Stress and the Immune System … The white blood cells (leucocytes) within the immune system identify and destroy foreign bodies (antigens) such as viruses. It also leads to the production of antibodies. There are several kinds of white blood cells or leucocytes within the immune system, including T cells, B cells and natural killer cells. T cells destroy invaders, and T-helper cells increase immunological activity. It is these T-helper cells that are attacked by the Human Immuno Deficiency Virus (HIV), the virus causing Acquired Immuno Deficiency Syndrome (AIDS). B cells produce antibodies.…” |