Blood Composition · NCERT Biology

What is the average lifespan of a Red Blood Cell, and where are they primarily destroyed?

  1. 120 days; Liver
  2. 100 days; Spleen
  3. 120 days; Spleen
  4. 80 days; Bone marrow
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Correct answer: 120 days; Spleen

RBCs have an average lifespan of 120 days. After this period, they are destroyed in the spleen, which is often referred to as the 'graveyard of RBCs'.

Difficulty: Medium Question 4 of 20

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