Question

Select the correct match.

I	II	III
(i) Monocyte	(a) Large round nucleus	(l) Antihistamine property
(ii) Lymphocyte	(b) Twisted nucleus	(m) Release heparin
(iii) Basophil	(c) Bilobed nucleus	(n) Phagocytic
(iv) Eosinophil	(d) Kidney-shaped nucleus	(o) Produce antibodies

• A. i-d-n, ii-a-o, iii-b-m, iv-c-l
• B. i-b-m, ii-a-l, iii-c-n, iv-d-o
• C. i-c-n, ii-b-o, iii-d-m, iv-a-l
• D. i-a-o, ii-d-m, iii-c-l, iv-b-n

Answer 1

Answer: (A)

i-d-n, ii-a-o, iii-b-m, iv-c-l

(i) Monocytes are agranular leucocytes. They have a kidney-shaped nucleus. These cells are actively motile and phagocytic cells.

(ii) Lymphocytes are agranular leucocytes. They have a large centralised round nucleus. These cells mediate immunity and secrete antibodies.

(iii) Basophils are granular leucocytes. They have a S-shaped or twisted nucleus. These cells release heparin, serotonin and histamine.

(iv) Eosinophils are granular leucocytes. They have bilobed nucleus. These cells play important role in immunity and allergic reactions. They degrade mediators of hypersensitivity reactions such as histamine. Hence, they have antihistamine property.

So, the correct answer is 'i-d-n, ii-a-o, iii-b-m, iv-c-l'.