Class 9 Biology MCQs (Grade 9) From Textbook

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Class 9 Biology MCQs – Certification Test 204

Red Blood Cells Quiz (Question 204) – App & e-Book Download

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MCQ: 204

In males, the number of red blood cells in one cubic millimeter of blood are

  1. 5 to 5.5 million
  2. 6 to 6.5 million
  3. 1 to 2.5 million
  4. 2 to 4 million

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