Class 9 Biology Study App | Human Heart MCQ e-Book PDF
Class 9 Biology MCQs (Grade 9) From Textbook

Class 9 Biology MCQs – Certification Test 1115

Human Heart MCQ (Question 1115) – Study App & e-Book Download

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MCQ 1115: The valve which prevents the blood backflow to the left atrium from:

  1. left ventricle
  2. right ventricle
  3. right atria
  4. left atria

Class 9 Biology MCQ App & e-Book – Human Heart Admission Tests

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