This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 6 Respiration In Organisms – Quiz 29 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 6 Respiration In Organisms Quiz 29 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the correct sequence for the air to exhale out from the lungs?R-BronchusS-TracheaT-AlveolusU-Bronchiole A) S$\rightarrow$U$\rightarrow$R$\rightarrow$T. B) S$\rightarrow$R$\rightarrow$U$\rightarrow$T. C) T$\rightarrow$U$\rightarrow$R$\rightarrow$S. D) T$\rightarrow$R$\rightarrow$U$\rightarrow$S. Show Answer Correct Answer: C) T$\rightarrow$U$\rightarrow$R$\rightarrow$S. 2. During heavy exercise the breathing rate of a persons shows down. A) True. B) False. C) None of these. D) None of the above. Show Answer Correct Answer: B) False. 3. Why is respiration important for energy production in cells? A) Respiration produces carbon dioxide as the main product. B) Respiration is crucial for producing ATP, the energy currency of cells. C) Respiration is only necessary for plants. D) Respiration helps in the digestion of food. Show Answer Correct Answer: B) Respiration is crucial for producing ATP, the energy currency of cells. 4. The exchange of oxygen and carbon dioxide between living cells and their environment; includes breathing and cellular respiration A) Combustion. B) Respiration. C) Photosynthesis. D) Decomposition. Show Answer Correct Answer: B) Respiration. 5. A large muscular sheet called? A) Chest cavity. B) Nasal cavity. C) Lungs. D) Diaphragm. Show Answer Correct Answer: D) Diaphragm. 6. Circulatory system consists of: A) Blood. B) Blood vessels. C) Heart. D) All the above. Show Answer Correct Answer: D) All the above. 7. Explain the gas exchange mechanism in humans. A) Gas exchange happens in the skin, allowing for breathing through pores. B) Oxygen is released from the blood in the kidneys and carbon dioxide is absorbed. C) Gas exchange in humans occurs in the alveoli of the lungs, where oxygen is absorbed into the blood and carbon dioxide is released. D) Gas exchange occurs in the stomach where nutrients are absorbed. Show Answer Correct Answer: C) Gas exchange in humans occurs in the alveoli of the lungs, where oxygen is absorbed into the blood and carbon dioxide is released. 8. ..... are pores present on the hard woody branches made of dead cells A) Stomata. B) Trachea. C) Lenticels. D) None of the above. Show Answer Correct Answer: C) Lenticels. 9. Which of the following statements is correct for anaerobic respiration? A) Food is broken down in the absence of oxygen to release energy. B) Breakdown of food occurs in presence of oxygen. C) It is a type of external respiration. D) It produces large amount of energy compared to aerobic respiration. Show Answer Correct Answer: A) Food is broken down in the absence of oxygen to release energy. 10. Which process PRODUCES carbon dioxide? (In other words:Carbon dioxide is a PRODUCT). A) Photosynthesis. B) Replication. C) Mutation. D) Respiration. Show Answer Correct Answer: D) Respiration. 11. Which of the following process is called anaerobic respiration. A) Fermentation. B) Osmosis. C) Imbibition. D) Transportation. Show Answer Correct Answer: A) Fermentation. 12. Using the energy of sunlight to make organic molecules from H2O and CO2 A) Autotrophs. B) Photoautotrophs. C) Chemoautotrophs. D) None of the above. Show Answer Correct Answer: B) Photoautotrophs. 13. ..... is the single-celled organism which respire anaerobically and is therefore used to make wine and beer. A) Fungi. B) Bacteria. C) Amoeba. D) Yeast. E) None of these. Show Answer Correct Answer: D) Yeast. 14. Photosynthesis releases energy, while respiration stores energy. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 15. The mountaineers carry oxygen with them because: A) . At an altitude of more than 5 km there is no air. B) . The amount of air available to the person is less than that available on the ground. C) . The temperature of air is higher than that on the ground. D) . The pressure of air is higher than that on the ground. Show Answer Correct Answer: B) . The amount of air available to the person is less than that available on the ground. 16. The sizes of the chest cavity increases during inhalation. A) True. B) False. C) None of these. D) None of the above. Show Answer Correct Answer: A) True. 17. Trachea is used in cockroach for exchange of gasses. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 18. Why is respiration important for living organisms? A) Respiration is only necessary for plants. B) Respiration helps in the growth of non-living things. C) Respiration is a process that occurs only during sleep. D) Respiration provides energy for cellular processes essential for life. Show Answer Correct Answer: D) Respiration provides energy for cellular processes essential for life. 19. Symbol of Gold is: A) Hg. B) And. C) Au. D) P. Show Answer Correct Answer: C) Au. 20. What is the important of the transport system in organism? A) Transport oxygen and nutrients to the body cell. B) Transport waste products to the body cells. C) Transport urea and mineral salts to the body cell. D) Transport carbon dioxide and nutrients to the body cells. Show Answer Correct Answer: A) Transport oxygen and nutrients to the body cell. 21. Explain the difference between aerobic and anaerobic respiration. A) Aerobic respiration produces less energy than anaerobic respiration. B) Anaerobic respiration requires oxygen to produce energy. C) Aerobic respiration requires oxygen to produce energy, while anaerobic respiration does not require oxygen and produces less energy. D) Aerobic respiration requires less energy than anaerobic respiration. Show Answer Correct Answer: C) Aerobic respiration requires oxygen to produce energy, while anaerobic respiration does not require oxygen and produces less energy. 22. What are the products of cell respiration? A) Water, light, and sugar. B) Water, carbon dioxide, ATP. C) Oxygen, water, sugar. D) None of the above. Show Answer Correct Answer: B) Water, carbon dioxide, ATP. 23. While exercising our body needs to produce A) More energy. B) Less energy. C) All the above. D) None of the above. Show Answer Correct Answer: A) More energy. 24. The size of the chest cavity increases during inhalation. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 25. Photosynthesis uses CO2 that is released during cellular respiration to make food energy and release ..... A) Chlorophyll. B) CO2. C) Carbon dioxide. D) Oxygen. Show Answer Correct Answer: D) Oxygen. ← 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