Match List-I with List-II
| List-I | List-II |
|---|---|
| Terms | Relationships |
| (A) Humoral immune response | (I) T-lymphocytes |
| (B) Cell-mediated immunity | (II) IgA |
| (C) Allergy | (III) B-lymphocytes |
| (D) Colostrum | (IV) IgE |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (A) - (III), (B) - (I), (C) - (IV), (D) - (II)
(A) Humoral immune response — this matches (III) B-lymphocytes. Here the response is carried by antibodies that float in the body fluids (humors). B-lymphocytes make these antibodies.
(B) Cell-mediated immunity — this matches (I) T-lymphocytes. Here the cells themselves attack the invader. T-lymphocytes do not make antibodies. They are the cells behind this response, for example in the rejection of a transplanted organ.
(C) Allergy — this matches (IV) IgE. An allergy is an over-reaction to an allergen, and the antibodies made against the allergen are of the IgE type.
(D) Colostrum — this matches (II) IgA. Colostrum is the first milk of a mother. It is rich in IgA antibodies, which protect the newborn baby.
NCERT Extract:
Acquired Immunity – “… Because these antibodies are found in the blood, the response is also called as humoral immune response. This is one of the two types of our acquired immune response – antibody mediated. The second type is called cell-mediated immune response or cell-mediated immunity (CMI). The T-lymphocytes mediate CMI.”
Allergies – “… The exaggerated response of the immune system to certain antigens present in the environment is called allergy. The substances to which such an immune response is produced are called allergens. The antibodies produced to these are of IgE type.”
Active and Passive Immunity – “… The yellowish fluid colostrum secreted by mother during the initial days of lactation has abundant antibodies (IgA) to protect the infant.”