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The cell that lacks a nucleus is

  • A.Flame cell
  • B.Spermatozoan
  • C.Red blood corpuscles in man
  • D.White blood corpuscles

Answer: C

The mature red blood corpuscle in man has no nucleus. It is extruded as the cell matures, leaving more room for haemoglobin and giving the cell its flexible biconcave shape.

The consequence is that a red cell cannot divide or repair itself, and lives only about 120 days. White cells and spermatozoa both retain their nuclei.

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