Q. Determine the wrong statement/s with respect to the nucleated blood cells.
I. The most abundant leucocyte is a granulocyte while the least abundant leucocyte is an agranulocyte.
II. The largest leucocyte is a granulocyte while the smallest leucocyte is an agranulocyte.
III. Phagocytic leucocytes may be agranulocyte or granulocyte.
IV. Polymorphonuclear leucocytes are the largest granulocyte while the largest agranulocyte has a kidney-shaped nucleus.

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Solution:

The most abundant leucocyte (neutrophil) is a granulocyte while the least abundant leucocyte (basophil) is also a granulocyte. The largest leucocyte (monocyte) is an agranulocyte while the smallest leucocyte (lymphocyte) is also an agranulocyte. Phagocytic leucocytes are neutrophils (granulocyte) and monocyte (agranulocyte). Polymorphonuclear leucocytes (neutrophils) are the largest granulocyte while the largest agranulocyte (monocyte) has a kidney shaped nucleus.