This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 6 Respiration In Organisms – Quiz 45 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 6 Respiration In Organisms Quiz 45 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Simon breathes in and out of a paper bag three times. How has the oxygen and carbon dioxide in the bag changed after three breathes? A) Oxygen:increase, Carbon dioxide:Increase. B) Oxygen:increase, Carbon dioxide:decrease. C) Oxygen:decrease, Carbon dioxide:Increase. D) Oxygen:decrease, Carbon dioxide:decrease. Show Answer Correct Answer: C) Oxygen:decrease, Carbon dioxide:Increase. 2. Autotrophs are organisms that produce their own food. Which do scientist classify as autotrophs? A) Chordates. B) Fungi. C) Plants. D) Molds. Show Answer Correct Answer: C) Plants. 3. Which of the following prevent the entry of food into the trachea? A) Epiglottis. B) Trachea. C) Salivary gland. D) Oesophagus. Show Answer Correct Answer: A) Epiglottis. 4. The removal of waste in living beings is known as ..... A) Respiration. B) Growth. C) Response to stimulus. D) Excretion. Show Answer Correct Answer: D) Excretion. 5. Define aerobic respiration. A) Aerobic respiration is a process that only occurs in plants. B) Anaerobic respiration occurs without oxygen. C) Aerobic respiration is the breakdown of glucose in the absence of oxygen. D) Aerobic respiration is the process of producing cellular energy in the presence of oxygen. Show Answer Correct Answer: D) Aerobic respiration is the process of producing cellular energy in the presence of oxygen. 6. Respiration is a process opposite to? A) Blood circulation. B) Digestion. C) Photosynthesis. D) None of these. Show Answer Correct Answer: C) Photosynthesis. 7. Given the following structures:1. larynx2. nasal cavity3. pharynx4. tracheaWhich of the following is the correct order that air would flow during inhalation. A) 1, 2, 3, 4. B) 2, 1, 3, 4. C) 2, 3, 1, 4. D) 4, 2, 3, 1. Show Answer Correct Answer: C) 2, 3, 1, 4. 8. What is main organ of respiration A) Nose. B) Lung. C) Wind pipe. D) Trachea. Show Answer Correct Answer: B) Lung. 9. When you step out into the cold, your body shivers in order to keep its temperature at 98.6F. A) All living things use energy. B) All living things contain cells. C) All living things maintain homeostasis. D) All living things grow. Show Answer Correct Answer: C) All living things maintain homeostasis. 10. Which of the following option presents the passage of air from outside to lungs? A) Larynx, trachea, pharynx, bronchial tubes. B) Bronchial tubes, trachea, pharynx, larynx. C) Pharynx, trachea, larynx, bronchial tubes. D) Pharynx, larynx, trachea, bronchial tubes. Show Answer Correct Answer: D) Pharynx, larynx, trachea, bronchial tubes. 11. Pick a example of anaerobic respiration? A) Yeast. B) Humans. C) Lactic acid. D) Water. Show Answer Correct Answer: A) Yeast. 12. Which terms best describe heterotrophs? A) Plants; producers. B) Animals; producers. C) Plants; consumers. D) Animals; consumers. Show Answer Correct Answer: D) Animals; consumers. 13. Anaerobic organisms undergo the process of: A) Transpiration. B) Fermentation. C) Curing. D) Photosynthesis. Show Answer Correct Answer: B) Fermentation. 14. Is yeast a Anarobic or aerobic excreting organisms? A) Anarobic. B) Aerobic. C) All the above. D) None of the above. Show Answer Correct Answer: A) Anarobic. 15. Every system in the body is consisted of some ..... A) Organs. B) Tissues. C) Nerves. D) Glands. Show Answer Correct Answer: A) Organs. 16. Which of these is not a part of the human respiratory system? A) Nostrils. B) Oesophagus. C) Bronchi. D) Lungs. Show Answer Correct Answer: B) Oesophagus. 17. ..... is the energy-requiring process which joins smaller molecules together to form larger molecules. A) Metabolism. B) Anabolism. C) Catabolism. D) Heat Transfer. Show Answer Correct Answer: B) Anabolism. 18. Dolphins breathe through their ..... A) Blowholes. B) Spiracles. C) Skin. D) Gills. Show Answer Correct Answer: A) Blowholes. 19. Reserve food material in fungi is called ..... A) Chitin. B) Mycellium. C) Glycogen. D) Hyphae. Show Answer Correct Answer: C) Glycogen. 20. Which is a form of energy? A) Photosynthesis. B) Fermentation. C) Cellular Respiration. D) Heat. Show Answer Correct Answer: D) Heat. 21. Explain the role of mitochondria in cellular respiration. A) Mitochondria release oxygen through the process of cellular respiration. B) Mitochondria produce glucose through the process of cellular respiration. C) Mitochondria produce ATP through the process of cellular respiration. D) Mitochondria store water through the process of cellular respiration. Show Answer Correct Answer: C) Mitochondria produce ATP through the process of cellular respiration. 22. Which of the following processes will most likely contribute to the development of soil? A) Volcanic eruptions that make new land. B) Building up of snow in very cold areas. C) Migration of animals to warmer climates. D) Breaking down of rock by wind, water, and ice. Show Answer Correct Answer: D) Breaking down of rock by wind, water, and ice. 23. ..... is the common part between our digestive and respiratory system. A) Larynx. B) Food pipe. C) Wind pipe. D) Pharynx. Show Answer Correct Answer: D) Pharynx. 24. Through which tubes does air enters the lungs from the windpipe? A) Bronchi. B) Trachea. C) Alveoli. D) None of the above. Show Answer Correct Answer: A) Bronchi. 25. What is the average breathing rate of a human at rest? A) 25-30 breaths per minute. B) 10-15 breaths per minute. C) 15-20 breaths per minute. D) 20-25 breaths per minute. Show Answer Correct Answer: C) 15-20 breaths per minute. ← 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 3Class 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 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books