Class 9 Biology MCQs (Grade 9) From Textbook

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Class 9 Biology MCQs – Certification Test 261

Human Heart Trivia (Question 261) – Learning App & e-Book Download

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MCQ: 261

The ventricle of the heart which has most of the thickest wall is

  1. lower ventricle
  2. upper ventricle
  3. right ventricle
  4. left ventricle
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