Final answer:
No visible cytoplasmic granules are present in monocytes, which are a type of agranulocyte with fewer and less visible granules compared to granulocytes like neutrophils, eosinophils, and basophils.
No visible cytoplasmic granules are present in ___monocytes_
so the correct answer is A
Step-by-step explanation:
No visible cytoplasmic granules are present in monocytes. In the context of leukocytes (white blood cells), there are two primary classifications based on the presence of cytoplasmic granules: granulocytes and agranulocytes. Granulocytes, which include neutrophils, eosinophils, and basophils, are characterized by abundant granules within the cytoplasm. These granules are visible under a microscope and contain various enzymes and other molecules that help the cell in its immune functions.
In contrast, agranulocytes, which include lymphocytes and monocytes, contain far fewer and less visible granules. Monocytes in particular, when they mature into macrophages and dendritic cells, have a very clear cytoplasm due to the paucity of these granules. Monocytes are responsible for adaptive immune responses and phagocytosis of pathogens and debris.
the correct answer is A monocytes