Respiration and Circulation Multiple Choice Questions 1 PDF Download

Learn respiration and circulation MCQs, grade 8 online science test 1, respiration and breathing multiple choice questions and answers. Respiration and breathing revision test has science worksheets, helping answer key with choices as exhale, inhale, digestion and defecate of multiple choice questions (MCQ) with respiration and breathing quiz as the ribs moves upwards and outwards when we 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 1

MCQ. The ribs moves upwards and outwards when we

  1. inhale
  2. exhale
  3. digestion
  4. defecate

A

MCQ. More than half of total blood volume is the

  1. red and blood cells
  2. plasma
  3. platelets
  4. all of them

B

MCQ. The special organ in mammals, birds and reptiles is

  1. lungs
  2. air sacs
  3. stomata
  4. spiracles

A

MCQ. Platelets help in blood

  1. producing
  2. rejuvenating
  3. clotting
  4. purifying

C

MCQ. The circulatory system of human is composed of

  1. heart
  2. blood
  3. blood vessels
  4. all of them

D