Respiration and Circulation Multiple Choice Questions Test 9 Tests pdf Download

Practice science test 9 on respiration and circulation MCQs, grade 8 respiration and breathing multiple choice questions and answers. Respiration and breathing revision test has science worksheets with 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. Free science study guide to learn respiration and breathing quiz to attempt multiple choice questions based test.

MCQs on Respiration and Circulation: Worksheets 9 Quiz pdf Download

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. Blood which is oxygenated in lungs is carried to heart by

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

A