This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Respiration In Organisms > Class 7 Science Chapter 6 Respiration In Organisms – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 6 Respiration In Organisms Quiz 12 (60 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) T$\rightarrow$R$\rightarrow$U$\rightarrow$S. B) S$\rightarrow$U$\rightarrow$R$\rightarrow$T. C) T$\rightarrow$U$\rightarrow$R$\rightarrow$S. D) S$\rightarrow$R$\rightarrow$U$\rightarrow$T. 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 is only necessary for plants. B) Respiration produces carbon dioxide as the main product. C) Respiration helps in the digestion of food. D) Respiration is crucial for producing ATP, the energy currency of cells. Show Answer Correct Answer: D) 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) Photosynthesis. B) Respiration. C) Decomposition. D) Combustion. Show Answer Correct Answer: B) Respiration. 5. A large muscular sheet called? A) Lungs. B) Diaphragm. C) Nasal cavity. D) Chest cavity. Show Answer Correct Answer: B) 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 process PRODUCES carbon dioxide? (In other words:Carbon dioxide is a PRODUCT). A) Mutation. B) Replication. C) Photosynthesis. D) Respiration. Show Answer Correct Answer: D) Respiration. 10. Which of the following process is called anaerobic respiration. A) Transportation. B) Osmosis. C) Fermentation. D) Imbibition. Show Answer Correct Answer: C) Fermentation. 11. 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. 12. ..... 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. 13. 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. 14. The mountaineers carry oxygen with them because: A) . The pressure of air is higher than that on the ground. B) . The amount of air available to the person is less than that available on the ground. C) . At an altitude of more than 5 km there is no air. D) . The temperature 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. 15. 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. 16. 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. 17. Why is respiration important for living organisms? A) Respiration is only necessary for plants. B) Respiration is a process that occurs only during sleep. C) Respiration provides energy for cellular processes essential for life. D) Respiration helps in the growth of non-living things. Show Answer Correct Answer: C) Respiration provides energy for cellular processes essential for life. 18. Symbol of Gold is: A) Hg. B) And. C) Au. D) P. Show Answer Correct Answer: C) Au. 19. 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. 20. 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. 21. 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. 22. Photosynthesis uses CO2 that is released during cellular respiration to make food energy and release ..... A) Oxygen. B) Chlorophyll. C) CO2. D) Carbon dioxide. Show Answer Correct Answer: A) Oxygen. 23. The MAIN thing Decomposers do for the the soil is the following: A) Store moisture. B) Burrow deep in the soil. C) Make space for air and water. D) Break down and digest dead organisms. Show Answer Correct Answer: D) Break down and digest dead organisms. 24. What is absorbed by the tree roots and transported to the leaves? A) Water. B) Carbon. C) Glucose. D) Air. Show Answer Correct Answer: A) Water. 25. ..... is the general process in which organisms convert sugars into biochemical energy using Oxygen A) Pollination. B) Carbonation. C) Transpiration. D) Respiration. Show Answer Correct Answer: D) Respiration. 26. Gaseous exchange in fish and earthworm occurs respectively through A) Gills and spiracles. B) Lungs and gills. C) Gills and skin. D) Lungs in both. Show Answer Correct Answer: C) Gills and skin. 27. Guess who am I?a) It is a metabolic process of breaking down of glucose into carbon dioxide and water. A) Cellular Respiration. B) Anaerobic Respiration. C) Aerobic Respiration. D) Breathing. Show Answer Correct Answer: A) Cellular Respiration. 28. Choose the correct formula of Calcium Bicarbonate. A) $CaCO_3$. B) $CAC_2$. C) $CA\left(HCO_3\right)\_2$. D) None of the above. Show Answer Correct Answer: C) $CA\left(HCO_3\right)\_2$. 29. What is the significance of carbon dioxide in respiration? A) Carbon dioxide is a waste product that has no role in respiration. B) Carbon dioxide is used to create energy in the form of ATP. C) Carbon dioxide is only produced during exercise and not at rest. D) Carbon dioxide is significant in respiration as it regulates breathing and maintains blood pH. Show Answer Correct Answer: D) Carbon dioxide is significant in respiration as it regulates breathing and maintains blood pH. 30. Durning exhalation, the ribs A) Move outwards. B) Move downwards. C) Move upwards. D) None of this. Show Answer Correct Answer: B) Move downwards. 31. The respiration in roots takes place by ..... process A) Diffusion. B) Osmosis. C) Exchange. D) None of the above. Show Answer Correct Answer: A) Diffusion. 32. The most common substrate for respiration is: A) Amino acids. B) Glucose. C) Sucrose. D) Fats. Show Answer Correct Answer: B) Glucose. 33. When we exhale which of the following things happens: A) Diaphragm relaxes. B) Diaphragm becomes dome shaped. C) Chest cavity contracts. D) All of the above. Show Answer Correct Answer: D) All of the above. 34. Blood consists of plasma, RBC, WBC and platelets. Blood is red due to the presence of a white pigment, Haemoglobin. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 35. Respiration results in the breakdown of- A) Salts. B) Acids. C) Starch. D) Glucose. Show Answer Correct Answer: D) Glucose. 36. What tissue regulates gas exchange A) Xylem. B) Chloroplast. C) Stomata. D) Flam. Show Answer Correct Answer: C) Stomata. 37. Respiration is the A) Intake of oxygen and release of carbon dioxide over a membrane. B) Mechanical movement to inhale and exhale air. C) Release of energy from food inside cells. D) Feature that enable an animal to survive in its habitat. Show Answer Correct Answer: C) Release of energy from food inside cells. 38. Respiration is a vital function that all living things carry out. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 39. Is there difference between breathing and respiration A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 40. Lungs are present in the A) Nasal cavity. B) Diaphragm. C) Chest Cavity. D) Respiration. Show Answer Correct Answer: C) Chest Cavity. 41. Please select who performs cellular respiration: A) Animals. B) Both animals and plants. C) Plants. D) None of the above. Show Answer Correct Answer: B) Both animals and plants. 42. Which process is used in making wine in wineries? A) Aerobic respiration. B) Photosynthesis. C) Anaerobic respiration. D) None of the above. Show Answer Correct Answer: C) Anaerobic respiration. 43. Chemical formula of Glucose is: A) $C_{12}H_6O_{12}$. B) $C_6O_{12}H_6$. C) $ Tashq $. D) $ C_6H_6o_ {12} $. Show Answer Correct Answer: D) $ C_6H_6o_ {12} $. 44. Where are platelets found? A) Chest cavity. B) Blood vessel. C) Heart. D) Blood. Show Answer Correct Answer: D) Blood. 45. Which statement is true for both photosynthesis and cellular respiration? A) They both occur in the mitochondria. B) They both are required for a cell to produce ATP. C) They both produce oxygen. D) They both have sunlight as a reactant. Show Answer Correct Answer: B) They both are required for a cell to produce ATP. 46. The process which involved in the exchange of gases is called A) Digestion. B) Circulation. C) Breathing. D) Respiration. Show Answer Correct Answer: D) Respiration. 47. From the nasal cavity the air reaches our lungs through the A) Mouth. B) Chest cavity. C) Windpipe. D) None of the above. Show Answer Correct Answer: C) Windpipe. 48. Types of respiration A) 1. B) 2. C) 5. D) 4. Show Answer Correct Answer: B) 2. 49. Is the catabolic pathway in which organic molecules are broken down to release energy for use by a cell. A) Cellular respiration. B) Thermodynamics. C) Photosynthesis. D) None of the above. Show Answer Correct Answer: A) Cellular respiration. 50. Crystal is trying to increase the protein in her diet. Which foods will best satisfy this nutritional need? A) Peas, fish, milk, and beans. B) Apples, carrots, juice, and rice. C) Kiwi, lettuce, tea, and strawberries. D) Watermelon, spinach, coffee, and pasta. Show Answer Correct Answer: A) Peas, fish, milk, and beans. 51. Respiration is a biophysical process. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 52. Prokaryotic organisms do not have ..... A) Nucleus. B) Cytoplasm. C) Plasma membrane. D) Nuclear membrane. Show Answer Correct Answer: D) Nuclear membrane. 53. Which of the following is not associated with respiration? A) Trachea. B) Liver. C) Alveoli. D) Lungs. Show Answer Correct Answer: B) Liver. 54. How do frog breathe in the water? A) Lungs. B) Moist skin. C) Gills. D) Spiracle. Show Answer Correct Answer: B) Moist skin. 55. Gas exhaled during respiration is called ..... A) Carbon dioxide. B) Oxygen. C) Waste. D) Sweat. Show Answer Correct Answer: B) Oxygen. 56. Tiny air sacs of the lungs where oxygen and carbon dioxide are exchanged are ..... A) Alveoli. B) Larynx. C) Bronchi. D) Pharynx. Show Answer Correct Answer: A) Alveoli. 57. Organisms that obtain energy from other organisms ..... A) Photosynthesis. B) Heterotroph. C) Autotroph. D) ATP. Show Answer Correct Answer: B) Heterotroph. 58. Which is the most effective form of respiration? A) Anaerobic respiration. B) Fermentation. C) Photosynthesis. D) Aerobic respiration. Show Answer Correct Answer: D) Aerobic respiration. 59. Which organisms are capable of photosynthesis? A) Plants and Fungi. B) Animals. C) Humans. D) Plants. Show Answer Correct Answer: D) Plants. 60. 1:-Which Organism are responsible for taking the carbon dioxide? A) Human. B) Trees. C) Fish. D) None of the above. Show Answer Correct Answer: B) Trees. ← PreviousNext →Related QuizzesScience QuizzesClass 7 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books