Respiration and Circulation Multiple Choice Questions 9 PDF Download

Learn respiration and circulation MCQs, grade 8 online science test 9, respiration and breathing multiple choice questions and answers. Respiration and breathing revision test has science worksheets, helping answer key with choices as digestion system, respiratory system, nervous system and circulatory system of multiple choice questions (MCQ) with respiration and breathing quiz as human beings have specialized structure to carry out exchange of gases called for competitive exam prep, viva interview questions. Free science study guide to practice respiration and breathing quiz to attempt multiple choice questions based test.

MCQs on Respiration and Circulation Quiz PDF Download Worksheets 9

MCQ. Human beings have specialized structure to carry out exchange of gases called

  1. respiratory system
  2. digestion system
  3. nervous system
  4. circulatory system

A

MCQ. The blood which is oxygenated in lungs is carried to heart by

  1. pulmonary veins
  2. carotid veins
  3. aorta
  4. jugular vein

A