This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 6 Respiration In Organisms – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 6 Respiration In Organisms Quiz 3 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. DURING HEAVY EXERCISE WE BREATHE SLOWLY A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 2. When we breath which things moves down A) Diaphragm. B) Alveoli. C) Chest cavity. D) Lungs. Show Answer Correct Answer: A) Diaphragm. 3. Fish breathe with the help of gills which are richly supplied with blood vessels. The gills help the fish to A) Take in oxygen from air. B) Release waste substances in water. C) Absorb nutrients present in water. D) Take in oxygen dissolved in water. Show Answer Correct Answer: D) Take in oxygen dissolved in water. 4. Which type of organism would MOST likely benefit directly from increased levels of CO2? A) Mushroom. B) Tree. C) Bird. D) Fish. Show Answer Correct Answer: B) Tree. 5. A large muscular sheet present on the floor of the chest cavity is called A) Diaphragm. B) Trachea. C) Alveoli. D) None of the above. Show Answer Correct Answer: A) Diaphragm. 6. What does metabolism mean? A) Converting energy into food. B) Making light reactions happen. C) Converting food into energy. D) None of the above. Show Answer Correct Answer: C) Converting food into energy. 7. ..... and respiration processes are complementary to each other. A) Photosynthesis. B) Aerobic respiration. C) Fermentation. D) None of the above. Show Answer Correct Answer: A) Photosynthesis. 8. Through which tubes does air enter the lungs from bronchi? A) Larynx. B) Bronchioles. C) Alveoli. D) Trachea. Show Answer Correct Answer: B) Bronchioles. 9. The process of keeping things inside your body constant A) Homeostasis. B) Hibernation. C) Migration. D) Organism. Show Answer Correct Answer: A) Homeostasis. 10. What is the name of the pigment molecule that absorbs light energy and makes plants green? A) Chloroplast. B) Glucose. C) Mitochondria. D) ChlorophyllTags9B. Show Answer Correct Answer: D) ChlorophyllTags9B. 11. All organisms are made of small microscopic units which cannot be seen with the naked eyes, called:(a) animals(b) cells(c) tissues(d) organs A) Animals. B) Cells. C) Tissues. D) Organs. Show Answer Correct Answer: B) Cells. 12. The specialized cells found in plants that collect light are ..... A) Chloroplasts. B) Chlorophyll. C) Leaves. D) None of the above. Show Answer Correct Answer: A) Chloroplasts. 13. In which form the energy is stored in our body? A) ATP(adenosine triphosphate). B) Electrical energy. C) Mechanical energy. D) Thermal energy. Show Answer Correct Answer: A) ATP(adenosine triphosphate). 14. Animal ..... is fueled by consuming energy from plants. A) Body repair. B) Energy. C) Growth. D) None of the above. Show Answer Correct Answer: C) Growth. 15. Air tubes in insects are also called ..... A) Trachea. B) Lungs. C) All the above. D) None of the above. Show Answer Correct Answer: A) Trachea. 16. In muscles Pyruvate in the absence of oxygen, breaks down to form ..... and energy A) Acetic acid. B) Lactic acid. C) Pyruvic acid. D) None of the above. Show Answer Correct Answer: B) Lactic acid. 17. The splitting of the glucose molecule is called? A) Synthesis. B) Denaturalization. C) Glycolysis. D) None of the above. Show Answer Correct Answer: C) Glycolysis. 18. Larnyx is also called as A) Glotis. B) Epiglottis. C) None of the above. D) All of these. Show Answer Correct Answer: B) Epiglottis. 19. ..... is a process carried out by green plants to make their own food ..... is a process done by plants to produce their own food A) FotografiPhotography. B) Fotototropismhototropism. C) FotosintesisPhotosynthesis. D) RespirasiRespiration. Show Answer Correct Answer: C) FotosintesisPhotosynthesis. 20. What are the two main reactants required for photosynthesis? A) Oxygen and sunlight. B) Glucose and chlorophyll. C) Nitrogen and carbon dioxide. D) Carbon dioxide and water. Show Answer Correct Answer: D) Carbon dioxide and water. 21. ..... (i) ..... respiration occurs in the presence of oxygen. In this process, the food is completely oxidised into ..... (ii) ..... and water.Select the correct option for (i) and (ii) respectively. A) Aerobic, Carbon dioxide. B) Anaerobic, Ethanol. C) Aerobic, Ethanol. D) Anaerobic, Carbon dioxide. Show Answer Correct Answer: A) Aerobic, Carbon dioxide. 22. Earth worm shows which type of respiration? A) Cutaneous respiration. B) Animal respiration. C) All the above. D) None of the above. Show Answer Correct Answer: A) Cutaneous respiration. 23. The food has ..... which is released during ..... A) Stored Energy, respiration. B) Glucose, breathing. C) Stored energy, breathing. D) Glucose, respiration. Show Answer Correct Answer: A) Stored Energy, respiration. 24. During exhalation, the ribs A) Moves out wards. B) Moves upwards. C) Moves downwards. D) Do not move at all. Show Answer Correct Answer: C) Moves downwards. 25. The primary source of energy for life on Earth is ..... A) ATP Energy. B) Kinetic Energy. C) Oxygen. D) Sunlight. Show Answer Correct Answer: D) Sunlight. ← PreviousNext →Related QuizzesClass 7 Science Chapter 6 Respiration In Organisms Quiz 1Class 7 Science Chapter 6 Respiration In Organisms Quiz 2Class 7 Science Chapter 6 Respiration In Organisms Quiz 4Class 7 Science Chapter 6 Respiration In Organisms Quiz 5Class 7 Science Chapter 6 Respiration In Organisms Quiz 6Class 7 Science Chapter 6 Respiration In Organisms Quiz 7Class 7 Science Chapter 6 Respiration In Organisms Quiz 8Class 7 Science Chapter 6 Respiration In Organisms Quiz 9Class 7 Science Chapter 6 Respiration In Organisms Quiz 10Class 7 Science Chapter 6 Respiration In Organisms Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books