What is Respiration MCQs Test and Answers pdf Download

Practice what is respiration MCQs and science for test prep and learning. Free plant photosynthesis and respiration notes has multiple choice questions (MCQ) with what is respiration quiz as waste products of process of respiration are with answering options oxygen + co2, carbon dioxide & water, food + oxygen and none of them for exam preparation. Study to learn what is respiration quiz with MCQs to find questions answers based online tests.

MCQs on What is Respiration

MCQ. Waste products of process of respiration are

  1. oxygen + CO2
  2. carbon dioxide & water
  3. food + oxygen
  4. none of them


MCQ. Largest percentage composition in air is of

  1. argon
  2. oxygen
  3. nitrogen
  4. carbon dioxide


MCQ. Balance of two gases is very important for all communities, these two gases are

  1. nitrogen & oxygen
  2. carbon dioxide and oxygen
  3. argon & nitrogen
  4. none of them


MCQ. Act of breaking of food substances in order to release energy is known as

  1. process
  2. transpiration
  3. respiration
  4. photosynthesis


MCQ. Photosynthesis reduces concentration of

  1. carbon dioxide
  2. oxygen
  3. energy
  4. neon