Question

Match the following

List I.	List II
A. Neutrophil	1. Single large nucleus
B. Eosinophil.	2. 2 to 3 lobed nucleus
C. Basophil.	3. Kidney shaped nucleus
D. Lymphocytes.	4. 2 to 7 lobed nucleus
E. Monocyte.	5. Bilobed nucleus

(a) A - 4, B - 1, C - 3, D - 5, E - 2
(b) A - 2, B - 5, C - 1, D - 4, E - 3
(c) A - 4,B - 5, C - 2, D - 1, E - 3
(d) A - 2, B - 4, C - 5, D - 3, E - 1
(e) A - 1, B - 4, C - 3, D - 2, E - 5

Answer 1

Hint: Neutrophils are also called polymorphonuclear leukocytes or polymorphs, as their nucleus is polymorphic. Lymphocytes have a small spherical nucleus and have abundant dark staining condensed chromatin.

Complete answer:
The WBC is of two types; granulocyte and agranulocytes. The cell which has granules in their cytoplasm is known as granulocytes like neutrophils, basophils, and eosinophils. Neutrophils have a nucleus that consists of two or more lobes joined together by hair- like filaments. The eosinophil is a specialized cell and generally has a nucleus with two lobes. Basophils contain an irregularly shaped nucleus, that consists of two- three lobes of the nucleus. Whereas agranulocytes are those cells that do not have granules in their cytoplasm and make more space for nuclei like monocytes and lymphocytes. Monocytes have bean- shaped nuclei that are unilobular. The lymphocytes can be identified by their single large nucleus.

Additional Information:
- Basophils are granular leukocytes. Their cytoplasmic granules stain deeply with basic dyes. They move about in an amoeboid fashion and ingest bacteria.
- Eosinophils are granular leukocytes, whose cytoplasmic granules are large and they stain brilliantly with acid dyes.
- Neutrophils are cytoplasmic granules whose cytoplasmic granules are very fine and they do not stain, with acidic or basic dyes.
So, the correct answer is '(c) A - 4, B - 5, C - 2, D - 1, E - 3'

Note:
- Lymphocytes are agranular leukocytes, with very large and DNA rich nucleus and small amounts of clear cytoplasm.
- They are the second most numerous leukocytes, next to neutrophils. They are almost rounded cells, with a small quantity of cytoplasm.
- Lymphocytes are actively involved in immune mechanisms. There are two classes of immunologically active lymphocytes namely, B-lymphocytes or B cells and T-lymphocytes or T- cells.