Correct option is D
Platelets are the blood cell types that are formed from megakaryocytes in the bone marrow. A megakaryocyte is a large bone marrow cell that fragments into thousands of small pieces, which are the platelets. Platelets are important for blood clotting and wound repair.
Monocytes, neutrophils, and eosinophils are types of white blood cells (WBCs) that are derived from hematopoietic stem cells, but not from megakaryocytes.
Information Booster:
Megakaryocytes are large, multinucleated cells found in the bone marrow. They are responsible for the production of platelets (thrombocytes).
Platelets play a crucial role in blood clotting by aggregating at sites of blood vessel injury and forming a plug to stop bleeding.
Monocytes, neutrophils, and eosinophils are types of leukocytes (white blood cells) and are involved in immune responses.
The process of platelet formation from megakaryocytes is known as thrombopoiesis.
The production of platelets involves the fragmentation of the cytoplasm of the megakaryocyte into small pieces, each of which becomes a platelet.
Additional Information:
(a) Monocytes: These are a type of white blood cell, and they are derived from myeloid progenitor cells in the bone marrow, not from megakaryocytes.
(b) Neutrophils: These are also white blood cells derived from the myeloid lineage, produced in the bone marrow, but not from megakaryocytes.
(c) Eosinophils: Like monocytes and neutrophils, eosinophils are derived from the bone marrow but are not formed from megakaryocytes.
