Blood cells are produced by:
Correct answer: C. Bone marrow
- A. Liver
- B. Spleen
- C. Bone marrow
- D. Heart
Explanation
Blood cells are produced in the red bone marrow from hematopoietic stem cells. These stem cells differentiate into various types of blood cells, including red blood cells, white blood cells, and platelets. The liver and spleen are involved in the breakdown and recycling of old or damaged red blood cells but do not produce them. The heart's function is to pump blood, not to produce blood cells.
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