This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Respiration In Organisms > Class 7 Science Chapter 6 Respiration In Organisms – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 6 Respiration In Organisms Quiz 11 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Mitochondrial component connected with ATP synthesis A) Inner membrane. B) Matrix. C) F$_{0}$-F$_{1}$ particles. D) Outer membrane. Show Answer Correct Answer: C) F$_{0}$-F$_{1}$ particles. 2. The process which involves the exchange of gases is called ..... A) Respiration. B) Breathing. C) Digestion. D) Circulation. Show Answer Correct Answer: B) Breathing. 3. What is anaerobic respiration? A) Anaerobic respiration is the process of producing energy without oxygen. B) Anaerobic respiration is the same as aerobic respiration. C) Anaerobic respiration requires oxygen to produce energy. D) Anaerobic respiration occurs only in plants during photosynthesis. Show Answer Correct Answer: A) Anaerobic respiration is the process of producing energy without oxygen. 4. Cells use ..... produced from cellular respiration A) Carbon dioxide. B) Amino acids. C) Glucose. D) Energy. Show Answer Correct Answer: D) Energy. 5. What is the role of oxygen in respiration? A) Oxygen is used to break down glucose and produce energy in the form of ATP. B) Oxygen is used to produce carbon dioxide. C) Oxygen is used to produce sunlight. D) Oxygen is used to produce water. Show Answer Correct Answer: A) Oxygen is used to break down glucose and produce energy in the form of ATP. 6. A large muscular sheet is called A) Nasal cavity. B) Diaphragm. C) Chest cavity. D) Atria. Show Answer Correct Answer: B) Diaphragm. 7. Respiration is a process in which oxidation of ..... takes place. A) CO2. B) Glucose. C) Water. D) Food. Show Answer Correct Answer: B) Glucose. 8. Exchange of gases in the lungs take place in A) Riba. B) Alveoli. C) Bronchi. D) Diaphragm. Show Answer Correct Answer: B) Alveoli. 9. A potted plant grow towards ..... A) Sound. B) Light. C) Darkness. D) None of the above. Show Answer Correct Answer: B) Light. 10. In muscle cells, the end product of anaerobic respiration is A) Carbon dioxide. B) Lactic acid. C) Ethanol. D) Water. Show Answer Correct Answer: B) Lactic acid. 11. What happens to lime water, when we exhale air into it? A) Becomes colourless. B) Remains same. C) Turns blue. D) Turns milky. Show Answer Correct Answer: D) Turns milky. 12. Which of the following is not happening during inhalation? A) The diaphragm contracts. B) The rib cage rises up. C) Expands the volume of the chest cavity. D) Diaphragm is relaxing. Show Answer Correct Answer: D) Diaphragm is relaxing. 13. True or FalseCellular respiration is different from photosynthesis because of raw material and products; photosynthesis takes place in plants, but cellular respiration takes place in plant and animal cells A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 14. Can cell respiration occur in plants? A) Always. B) Never. C) Sometimes. D) None of the above. Show Answer Correct Answer: C) Sometimes. 15. Yeast and bacteria perform A) Aerobic Respiration. B) Anerobic Respiration. C) Fermentation. D) None of the above. Show Answer Correct Answer: B) Anerobic Respiration. 16. The part of respiratory system which branches A) Nasal cavity. B) Lungs. C) Broccoli. D) Trachea. Show Answer Correct Answer: B) Lungs. 17. What gas do producers need in order to perform photosynthesis? A) Hydrogen. B) Nitrogen. C) Oxygen. D) Carbon dioxide. Show Answer Correct Answer: D) Carbon dioxide. 18. An anaerobic organism A) Lizard. B) Yeast. C) Human. D) Ant. Show Answer Correct Answer: B) Yeast. 19. The products of cellular respiration are A) Water and oxygen. B) Water and carbon dioxide. C) Carbon dioxide and oxygen. D) Sugar and oxygen. Show Answer Correct Answer: B) Water and carbon dioxide. 20. Inhaled air contains ..... % of oxygen and ..... % of carbondioxide. A) 21 and 0.04. B) 0.04 and 21. C) 16and 4.4. D) 4.4 and 16. Show Answer Correct Answer: A) 21 and 0.04. 21. The process of breathing in air is called ..... A) Breathing. B) No answer. C) Inspiration. D) Expiration. Show Answer Correct Answer: C) Inspiration. 22. ..... prevents collapsing of trachea. A) Cartilaginous rings. B) Diaphragm. C) Ribs. D) Muscles. Show Answer Correct Answer: A) Cartilaginous rings. 23. Match the column:1) Pigeon a) lungs2) Cockroach b) tracheae3) Earthworm c) skin4) Fish d)gills A) Pigeon-c) skin2) Cockroach-d) gills3) Earthworm-a) lungs4) Fish-b) tracheae. B) Pigeon-a) lungs2) Cockroach-b) tracheae3) Earthworm-c) skin4) Fish-d)gills. C) Pigeon-d) gills2) Cockroach-a) lungs 3) Earthworm-b) tracheae4) Fish-c) skin. D) Pigeon-a) lungs2) Cockroach-d) gills3) Earthworm-b) tracheae4) Fish-c) skin. Show Answer Correct Answer: B) Pigeon-a) lungs2) Cockroach-b) tracheae3) Earthworm-c) skin4) Fish-d)gills. 24. How does oxygen enter the bloodstream? A) Oxygen enters the bloodstream via the stomach. B) Oxygen is transported by red blood cells from the liver. C) Oxygen enters the bloodstream through the alveoli in the lungs. D) Oxygen is absorbed through the skin. Show Answer Correct Answer: C) Oxygen enters the bloodstream through the alveoli in the lungs. 25. Gills of a fish are equipped with blood vessels to help in the exchange of gases A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 26. Which of the following is present in a higher percentage in inhaled air than in exhaled air? A) Carbon dioxide. B) Hydrogen. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: D) Oxygen. 27. What % (percentage) of oxygen is inhaled and exhaled during breathing? A) 4.4%. B) 16.4%. C) 0.004%. D) 21%. Show Answer Correct Answer: D) 21%. 28. What pigment in the leaf captures energy from the sun? A) Air. B) Carbon. C) Chlorophyll. D) Chloroplast. Show Answer Correct Answer: C) Chlorophyll. 29. Structural and functional unit of lungs are called ..... A) Nostrils. B) Bronchi. C) Trachea. D) Alveoli. Show Answer Correct Answer: D) Alveoli. 30. Do plants have a respiratory system? A) YES. B) NO. C) All the above. D) None of the above. Show Answer Correct Answer: B) NO. 31. What is the final product of cellular respiration? A) ATP. B) Glucose. C) Water. D) Carbon dioxide. Show Answer Correct Answer: A) ATP. 32. Which acid is formed in muscle cells during anaerobic respiration? A) Hydrochloric acid. B) Lactic Acid. C) Acetic Acid. D) Sulphuric acid. Show Answer Correct Answer: B) Lactic Acid. 33. The energy of food which we eat is released slowly inside our body by the process called: A) Respiration. B) Pollination. C) Transpiration. D) Restoration. Show Answer Correct Answer: A) Respiration. 34. Cells need energy to work A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 35. Where does the process of respiration take place in a cell? A) Cell membrane. B) Endoplasmic reticulum. C) Nucleus. D) Mitochondria. Show Answer Correct Answer: D) Mitochondria. 36. Which statement is FALSE about functions of the transport system in organisms A) Transports substances needed by body and plant cells. B) Eliminates carbon dioxide and other waste products from body cells. C) Transports products of photosynthesis. D) To carry out all life processes in organisms. Show Answer Correct Answer: D) To carry out all life processes in organisms. 37. After heavy exercise, due to the accumulation of which substance we get muscle cramps?(a) Malaic acid(b) Fumaric acid(c) Lipoic acid(d) Lactic acid A) C. B) D. C) B. D) A. Show Answer Correct Answer: B) D. 38. The rate of breathing in aquatic organisms is much faster than that seen in terrestrial organisms because ..... A) They are not able to breathe properly under water. B) They want to scare off other aquatic animals. C) The amount of dissolved oxygen is low compared to the amount of oxygen in the air. D) None of the above. Show Answer Correct Answer: C) The amount of dissolved oxygen is low compared to the amount of oxygen in the air. 39. Example of anaerobic resepiration A) Yeast. B) Butter. C) Both. D) None of the above. Show Answer Correct Answer: A) Yeast. 40. What are the similarities and differences between respiration in plants and animals? A) Both use oxygen and produce carbon dioxide, but plants also undergo photosynthesis to produce their own food. B) Plants and animals both use nitrogen for respiration. C) Plants and animals both use photosynthesis to produce their own food. D) Plants use carbon dioxide and produce oxygen, while animals use oxygen and produce carbon dioxide. Show Answer Correct Answer: A) Both use oxygen and produce carbon dioxide, but plants also undergo photosynthesis to produce their own food. 41. This is the process when sugar is broken down into energy, carbon dioxide, and water. A) Homeostasis. B) Cellular respiration. C) Digestion. D) Ingestion. Show Answer Correct Answer: B) Cellular respiration. 42. Lime water turns milky when it react with A) Nitrogen. B) Carbon. C) Carbon dioxide. D) Oxygen. Show Answer Correct Answer: C) Carbon dioxide. 43. Which structure closes off trachea during swallowing? A) Pharynx. B) Pneumatic. C) Epiglottis. D) Larynx. Show Answer Correct Answer: C) Epiglottis. 44. Hydrilla is a ..... A) Hydrophyte. B) Xerophyte. C) All the above. D) None of the above. Show Answer Correct Answer: A) Hydrophyte. 45. Because oxygen is used, fermentation makes more ATP than cellular respiration does. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 46. The air sacs that are covered with capillaries where gas exchange takes place A) Bronchi. B) Alveoli. C) Lungs. D) Oxygen. Show Answer Correct Answer: B) Alveoli. 47. ..... gas is exhaled during breathing A) Nitrogen. B) Oxygen. C) Carbon dioxide. D) None of the above. Show Answer Correct Answer: C) Carbon dioxide. 48. What is the end product of glucose in the absence of oxygen in muscle cells? A) Water. B) Lactic acid. C) Carbon dioxide. D) Ethanol. Show Answer Correct Answer: B) Lactic acid. 49. Inhaled air contains A) 21% of O2, 0.04% of Co2. B) 16% of O2, 4.4% of CO2. C) All the above. D) None of the above. Show Answer Correct Answer: A) 21% of O2, 0.04% of Co2. 50. Rate of transpiration is low in A) .water plants. B) Forest plant. C) Desert plant. D) All of the above. Show Answer Correct Answer: C) Desert plant. 51. Which best describes how organisms obtain energy from food? A) Food reacts with sunlight to release energy. B) Food reacts with water to release energy. C) Food reacts with carbon dioxide to release energy. D) Food reacts with oxygen to release energy. Show Answer Correct Answer: D) Food reacts with oxygen to release energy. 52. Insects have several openings on lateral sides of their bodies which lead to air tubes. These openings are called- A) Spiracles. B) Tracheae. C) Gills. D) Lungs. Show Answer Correct Answer: A) Spiracles. 53. When Breathing in Diaphragm moves? A) Up. B) Down. C) Left. D) Right. Show Answer Correct Answer: B) Down. 54. What is Pyruvate? A) 10 Carbon molecule. B) Many Carbon Molecule. C) Carbon less molecule. D) 3 Carbon Molecule. Show Answer Correct Answer: D) 3 Carbon Molecule. 55. ..... forms the floor of chest cavity A) Trachea. B) Alveoli. C) Ribs. D) Diaphragm. Show Answer Correct Answer: D) Diaphragm. 56. The shivering mechanism in bumblebees often serves the same purpose as it does in mammals. During which condition will the action of shivering most help a bumblebee to maintain homeostasis? A) Uncontrolled rise in core temperature. B) Low environmental temperature. C) Depletion of oxygen in muscle tissues. D) Decrease in available oxygen. Show Answer Correct Answer: B) Low environmental temperature. 57. A person breathes ..... while running A) Slow. B) Fast. C) Very slow. D) Moderate. Show Answer Correct Answer: B) Fast. 58. The left lung is smaller than right lung because it needs to make a compartment for the ..... A) Diaphragm. B) Heart. C) Chest cavity. D) None of these. Show Answer Correct Answer: B) Heart. 59. Oxygen mix with our blood(Haemoglobin) which will form ..... A) Oxyhaemoglobin. B) Glucose. C) Plasma. D) Blood cells. Show Answer Correct Answer: A) Oxyhaemoglobin. 60. In photosynthesis energy from the sun is transferred to ..... A) Water. B) Carbon dioxide. C) Glucose. D) Oxygen. Show Answer Correct Answer: C) Glucose. ← 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