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Name the blood cells in which nucleus is absent

  • A.Lymphocytes
  • B.Blood platelets
  • C.Monocytes
  • D.Eosinophils

Answer: B

Blood platelets have no nucleus.

They are not whole cells but fragments budded off from the giant megakaryocytes of the bone marrow, so they carry no nucleus and live only about ten days. Mature red cells likewise lose theirs; all the white cells keep them.

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