Question

multiple choice question
which characteristic is shared by all leukocytes?

concentration in the blood

type of cytoplasmic granule

presence of a nucleus

size of the cell

Explanation:

Leukocytes (white blood cells) vary in concentration, cytoplasmic granule type, and cell size. However, all leukocytes have a nucleus (unlike red blood cells which are anucleated). So the shared characteristic is the presence of a nucleus.

Answer:

C. Presence of a nucleus