This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Respiration In Organisms > 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 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. ..... is a box shaped structure just above the trachea A) Larynx. B) Trachea. C) Alveoli. D) Windpipe. Show Answer Correct Answer: A) Larynx. 2. The breakdown of food (glucose) in the presence of oxygen to release energy is called A) Internal respiration. B) Breathing. C) Cellular respiration. D) Non of the above. Show Answer Correct Answer: C) Cellular respiration. 3. During exhalation the diaphragm moves up and the volume of air decreases in the lungs. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 4. Cockroaches has network of respiratory tubes called A) Stigmata. B) Longitudinal tube. C) Trachea. D) Trachioles. Show Answer Correct Answer: C) Trachea. 5. The process of releasing are out from the body is called A) Inhalation. B) Respiration. C) Breathing. D) Exhalation. Show Answer Correct Answer: D) Exhalation. 6. Which organelle does Cellular Respiration occur in? A) Mitochondria. B) Chloroplasts. C) Cytoplasm. D) Nucleus. Show Answer Correct Answer: A) Mitochondria. 7. What is the green pigment that "traps" sunlight? A) ATP. B) Chlorophyll. C) Chloroplasts. D) Photosynthesis. Show Answer Correct Answer: B) Chlorophyll. 8. Organism which respires in the absences of oxygen is called a/an A) Microbe. B) Anaerobic. C) Aerobic. D) None of these. Show Answer Correct Answer: B) Anaerobic. 9. Respiration in Amoeba is by the process of ..... A) Symbiosis. B) Diffusion. C) Multiple fission. D) Binary fission. Show Answer Correct Answer: B) Diffusion. 10. What happens when your diaphragm relaxes and moves upward? A) Your lungs deflate and you breathe out. B) Your lungs inflate and you breathe in. C) Your alveoli transfer oxygen to your bloodstream. D) Your bloodstream transfers carbon dioxide to your alveoli. Show Answer Correct Answer: A) Your lungs deflate and you breathe out. 11. Respiration is essential for survival of living organisms. It releases energy from the food A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 12. Mitosis consists of all of the following, except ..... A) Telophase. B) Middle Phase. C) Prophase. D) Anaphase. Show Answer Correct Answer: B) Middle Phase. 13. The process of respiration in plants occurs A) When stomata are open. B) Only when photosynthesis stops. C) Only one photosynthesis in progress. D) All the time. Show Answer Correct Answer: D) All the time. 14. Normal range of Breathing rate per minute in an average adult person at rest is: A) 15-18. B) 30-33. C) 21-24. D) 9-12. E) None of the option. Show Answer Correct Answer: A) 15-18. 15. Which of the following is not a part of the human respiratory system? A) Trachea. B) Lungs. C) Oesophagus. D) Diaphragm. Show Answer Correct Answer: C) Oesophagus. 16. Identify all of the products of cellular respiration: A) Glucose and Oxygen. B) Carbon Dioxide and Water. C) Carbon Dioxide, Water, and ATP. D) Oxygen, Water, and Glucose. Show Answer Correct Answer: C) Carbon Dioxide, Water, and ATP. 17. What is the process by which oxygen is taken in and carbon dioxide is given out by the human body? A) Excretion. B) Digestion. C) Respiration. D) Photosynthesis. Show Answer Correct Answer: C) Respiration. 18. Glucose in presence of oxygen gives ..... and Glucose in absence of oxygen gives ..... A) Carbon dioxide + water + energy; lactic acid + water + energy. B) Carbon dioxide + energy; lactic acid + energy. C) Carbon dioxide + water + energy; lactic acid + energy. D) None of the above. Show Answer Correct Answer: C) Carbon dioxide + water + energy; lactic acid + energy. 19. Water and ..... are two waste products that are given off during the second step of cellular respiration. A) Chlorophyll. B) Glycolysis. C) Carbon dioxide. D) Oxygen. Show Answer Correct Answer: C) Carbon dioxide. 20. Energy from the sun is converted by plants and stored as ..... A) Energy. B) Carbon dioxide. C) Oxygen. D) Sugar. Show Answer Correct Answer: D) Sugar. 21. Water is taken in through which part of a plant? A) Chloropasts. B) Roots. C) Stomata. D) Leaves. Show Answer Correct Answer: B) Roots. 22. What is the function of the hair in the nose? A) To secrete mucus. B) To trap dust particles. C) To protect the mucus glands. D) None of these. Show Answer Correct Answer: B) To trap dust particles. 23. ..... is released during anaerobic respiration in muscle cells A) Carbon dioxide and water. B) Lactic acid. C) Oxygen. D) Lactic acid and water. Show Answer Correct Answer: B) Lactic acid. 24. In the cells Oxygen is used to break down A) Glucose Into Carbon Dioxide. B) Glucose into carbon di oxide and water. C) Water into carbon di oxide. D) Carbon di oxide into water. Show Answer Correct Answer: B) Glucose into carbon di oxide and water. 25. The efficiency of energy transfer from a lower trophic level to the next highest level is roughly A) 1000%. B) 100%. C) 10%. D) 1%. Show Answer Correct Answer: C) 10%. 26. During the process of exhalation, the ribs move A) (a) down and inwards. B) (b) up and inwards. C) (c) down and outwards. D) None of the above. Show Answer Correct Answer: A) (a) down and inwards. 27. Which of the following organisms does not have a specialised respiratory system? A) Frog. B) Paramecium sp. C) Snake. D) Grasshopper. Show Answer Correct Answer: B) Paramecium sp. 28. Identify all of the products of photosynthesis A) Glucose. B) Water and Glucose. C) Glucose and Oxygen. D) Oxygen and Carbon Dioxide. Show Answer Correct Answer: C) Glucose and Oxygen. 29. In which organism(s) does respiration occur? A) Plants. B) Animals. C) Fungus. D) All of these. Show Answer Correct Answer: D) All of these. 30. How is energy released during the process of respiration? A) By breaking down fats in the absence of oxygen. B) By breaking down glucose in the presence of oxygen. C) By converting water into glucose. D) By absorbing sunlight directly. Show Answer Correct Answer: B) By breaking down glucose in the presence of oxygen. 31. In human beings the respiratory pigment named ..... has high affinity for oxygen.So they take up oxygen from the air in the lungs and carry it to tissues. A) Haemocyanin. B) Haemoglobin. C) All the above. D) None of the above. Show Answer Correct Answer: B) Haemoglobin. 32. Yeast are used to make? A) Curd. B) Wine and beer. C) Bakery items. D) Both (b) and (c). Show Answer Correct Answer: D) Both (b) and (c). 33. Which is the physical process in respiratory system? A) Nutrient exchange. B) Oxygen absorption. C) Carbon dioxide release. D) Inhalation and exhalation. Show Answer Correct Answer: D) Inhalation and exhalation. 34. Yeast is used in A) Wine and beer industry. B) Bakery. C) Both the above. D) None of these. Show Answer Correct Answer: A) Wine and beer industry. 35. Which gas is most abundant in Earth's atmosphere? A) Oxygen. B) Nitrogen. C) Hydrogen. D) Carbon dioxide. Show Answer Correct Answer: B) Nitrogen. 36. Which of the following is not a product of aerobic respiration? A) Energy. B) Carbon-dioxide. C) Water. D) Alcohol. Show Answer Correct Answer: D) Alcohol. 37. Which structures hold the trachea together? A) Cartilage rings. B) Smooth muscle layers. C) Alveolar sacs. D) Elastic fibers. Show Answer Correct Answer: A) Cartilage rings. 38. Colour of hemoglobin is A) Red. B) Colour less. C) Blue. D) Green. Show Answer Correct Answer: A) Red. 39. The main source of energy for all life comes from ..... A) The food we eat/make. B) The Earth. C) The moon. D) The sun. Show Answer Correct Answer: D) The sun. 40. Which one is not a non-metal element? A) Hydrogen. B) Phosphorus. C) Chlorine. D) Aluminium. Show Answer Correct Answer: D) Aluminium. 41. If cancer has spread from a tumor into adjoining tissue it is said to be ..... A) Metastasized. B) Malignant. C) Mitosis. D) Benign. Show Answer Correct Answer: B) Malignant. 42. What is an organ which breathing process gets through it A) Lungs. B) Nostrils, Nasal cavity. C) Heart. D) Mouth. Show Answer Correct Answer: B) Nostrils, Nasal cavity. 43. The purpose of cellular respiration is to produce? A) Sugar. B) Protein. C) Energy. D) Oxygen. Show Answer Correct Answer: C) Energy. 44. If the breakdown occurs without the use of oxygen, the respiration is called ..... -respiration A) ANAEROBIC. B) AEROBIC. C) All the above. D) None of the above. Show Answer Correct Answer: A) ANAEROBIC. 45. Any substance that contains only one kind of an Atom is known as an element. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. 46. What is expected of the control in the experiments? A) The color will change just like the variable. B) The color will stay the same and not change. C) The color of the solution will change in all the tests. D) The color will disappear and become colorless. Show Answer Correct Answer: B) The color will stay the same and not change. 47. What gas is needed in order to perform respiration at the cellular level? A) Carbon dioxide. B) Hydrogen. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: D) Oxygen. 48. The process of breakdown of food in the cell is known as A) Digestion. B) Cellular respiration. C) Food breakdown. D) Breakdown process. Show Answer Correct Answer: B) Cellular respiration. 49. What is the name of the opening which does not allow food to enter into the lungs? A) Trachea. B) Diaphragm. C) Pharynx. D) Alveoli. Show Answer Correct Answer: A) Trachea. 50. ..... gas is released when human beings respire. A) Oxygen. B) CO2. C) Argon. D) Nitrogen. Show Answer Correct Answer: B) CO2. 51. (Assertion)-Yeasts are used to make wine and beer.(Reason)-They respire anaerobically and during this process yield alcohol. A) Both statements are correct and the reason is the correct explanation. B) Both statements are correct but the reason is not the correct explanation. C) Assertion is wrong and the reason is correct. D) Assertion is correct but the reason is wrong. Show Answer Correct Answer: A) Both statements are correct and the reason is the correct explanation. 52. Insects have a network of air tubes called ..... A) Spiracles. B) Trachea. C) Bronchi. D) None of the above. Show Answer Correct Answer: B) Trachea. 53. No energy is released during A) Exhalation. B) Inhalation. C) Breathing. D) All of these. Show Answer Correct Answer: D) All of these. 54. One of the following organisms can live without oxygen in air. This organism is: A) Amoeba. B) Yeast. C) Leech. D) Yak. Show Answer Correct Answer: B) Yeast. 55. Carbon dioxide and oxygen both enter and leave the leaf at the ..... A) Pore. B) Guard cells. C) Stomata. D) Spongy measophyll. Show Answer Correct Answer: C) Stomata. 56. Which of the following is the Energy currency: A) ADP. B) ATP. C) Mitochondria. D) Nucleus. Show Answer Correct Answer: B) ATP. 57. What are the products in the equation below:CO2+ H2O $\rightarrow$ C6H12O6 + O2 A) CO2+H20. B) ATP+Glucose. C) C6H12O6+O2. D) None of the above. Show Answer Correct Answer: C) C6H12O6+O2. 58. The number of times a person breathes in a minute is termed as ..... A) Breathing rate. B) Breathing point. C) Breathing laps. D) None of the above. Show Answer Correct Answer: A) Breathing rate. 59. Which of the following organisms primarily uses gills for respiration? A) Human. B) Frog. C) Fish. D) Bird. Show Answer Correct Answer: C) Fish. 60. How do plants obtain oxygen for respiration? A) By absorbing it from the soil. B) By obtaining it from the air through their roots. C) Through photosynthesis. D) By taking it in through their leaves. Show Answer Correct Answer: C) Through photosynthesis. ← 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 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books