This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Respiration In Organisms > Class 7 Science Chapter 6 Respiration In Organisms – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 6 Respiration In Organisms Quiz 4 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which gas is needed for Cellular Respiration? A) Oxygen. B) Carbon Dioxide. C) Water. D) Glucose. Show Answer Correct Answer: A) Oxygen. 2. Exhaled air has less percentage of carbon dioxide than inhaled air. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 3. What is the role of gills in respiration? A) Gills store nutrients for the fish. B) Gills are used for swimming and navigation. C) Gills help in regulating body temperature. D) Gills facilitate respiration by extracting oxygen from water and expelling carbon dioxide. Show Answer Correct Answer: D) Gills facilitate respiration by extracting oxygen from water and expelling carbon dioxide. 4. Name the process by which exchange of gases takes place by cell membrane of amoeba. A) Diffusion. B) Photosynthesis. C) Excretion. D) None of these. Show Answer Correct Answer: A) Diffusion. 5. Where does gas exchange take place in human lungs? A) Alveoli. B) Diaphragm. C) Bronchi. D) Trachea. Show Answer Correct Answer: A) Alveoli. 6. Where are human lungs present? A) In mouth. B) Chest cavity. C) In lungs. D) In stomach. Show Answer Correct Answer: B) Chest cavity. 7. What happens when we breathe in? A) The diaphragm contracts and flattens out. B) The diaphragm relaxes and flattens out. C) The lungs contract. D) The pressure in the lungs increases. Show Answer Correct Answer: A) The diaphragm contracts and flattens out. 8. Air reaches our lungs through the ..... A) Nostril. B) Chest cavity. C) Nasal cavity. D) Wind pipe. Show Answer Correct Answer: D) Wind pipe. 9. The raw material for cellular respiration is A) STARCH. B) FRUCTOSE. C) SUCROSE. D) GLUCOSE. Show Answer Correct Answer: D) GLUCOSE. 10. Bending of stem towards sunlight is called geotropism. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 11. Breathing rate in human beings in normal condition is A) 18-22 times in a minute. B) 15-18 times in a minute. C) 12-15 times in a minute. D) 22-25 times in a minute. Show Answer Correct Answer: B) 15-18 times in a minute. 12. What are the 'Spongy Organs' in human body? A) Lungs. B) Salivary Glands. C) Diaphragm. D) Heart. Show Answer Correct Answer: A) Lungs. 13. WHILE HEAVY EXERCISE THERE IS LACK OF A) LACTIC ACID. B) NITROGEN. C) CARBONDIAOXIDE. D) OXYGEN. Show Answer Correct Answer: D) OXYGEN. 14. Evaluate which statement is accurate: A) Glucose is a product of cellular respiration, ATP is a product of photosynthesis. B) Carbon dioxide is a product of photosynthesis, oxygen is a product of cellular respiration. C) Oxygen is a reactant of photosynthesis, carbon dioxide is a product. D) Oxygen is a product of photosynthesis, carbon dioxide is a product of cellular respiration. Show Answer Correct Answer: D) Oxygen is a product of photosynthesis, carbon dioxide is a product of cellular respiration. 15. Which is a single celled organisms used to make wine? A) Amoeba. B) Yeast. C) All the above. D) None of the above. Show Answer Correct Answer: B) Yeast. 16. How does the respiratory system in humans maintain the balance of oxygen and carbon dioxide in the body? A) By absorbing oxygen through the skin. B) By converting carbon dioxide into oxygen. C) By filtering the air through the kidneys. D) Through the process of gas exchange in the lungs. Show Answer Correct Answer: D) Through the process of gas exchange in the lungs. 17. Fish breath through there ..... A) Lungs. B) Skin. C) Gills. D) None of these. Show Answer Correct Answer: C) Gills. 18. Which are the gases involved in breathing? A) O2 and NO2. B) O2 and SO2. C) O2 and O3. D) O2 and CO2. Show Answer Correct Answer: D) O2 and CO2. 19. The end products of aerobic Respiration are A) Carbondioxide, water, energy. B) Carbondioxide, ethyl alcohol or lactic acid and energy. C) None. D) Carbondioxide, water and alcohol. Show Answer Correct Answer: A) Carbondioxide, water, energy. 20. When anaerobic respiration takes place in yeast cells it is called A) Photosynthesis. B) Fermentation. C) Both of these. D) None of these. Show Answer Correct Answer: B) Fermentation. 21. Find an example of anaerobs A) Milk. B) Yeast. C) Water. D) All of these. Show Answer Correct Answer: B) Yeast. 22. Plants use this gas during respiration A) Hydrogen. B) Nitrogen. C) Oxygen. D) Carbon dioxide. Show Answer Correct Answer: C) Oxygen. 23. How is cellular respiration different from photosynthesis? A) Photosynthesis requires oxygen, cellular respiration requires oxygen. B) Photosynthesis produces ATP, cellular respiration produces sugars. C) Photosynthesis produces oxygen, cellular respiration produces carbon dioxide. D) Photosynthesis requires energy from food, cellular respiration requires energy from the sun. Show Answer Correct Answer: C) Photosynthesis produces oxygen, cellular respiration produces carbon dioxide. 24. Name one organism that primarily uses anaerobic respiration. A) Clostridium botulinum. B) They exhibited chill. C) Saccharomyces cerevisiae. D) Streptococcus pneumoniae. Show Answer Correct Answer: C) Saccharomyces cerevisiae. 25. What is the process by which plants convert light energy into chemical energy? A) Germination. B) Photosynthesis. C) Respiration. D) Transpiration. Show Answer Correct Answer: B) Photosynthesis. 26. All the living organisms are made up of small microscopic units called ..... A) Bacteria. B) Cell. C) Virus. D) None of the above. Show Answer Correct Answer: B) Cell. 27. What causes muscle cramps in humans? A) Acetic acid. B) Lactic acid. C) Oxalic acid. D) None of the above. Show Answer Correct Answer: B) Lactic acid. 28. They give us the ability to see, feel, hear, smell and taste. A) Human body systems. B) Ears. C) Eyes. D) Hair. Show Answer Correct Answer: A) Human body systems. 29. Plants take in ..... during respiration and carbon-dioxide during photosynthesis A) Water. B) Water vapour. C) Oxygen. D) None of the above. Show Answer Correct Answer: C) Oxygen. 30. The oxygen we inhale is used to- A) 4 ) argon. B) 1 ) break down glucose into carbon dioxide. C) 2 ) and water also. D) 3) both 1 and 2 option. Show Answer Correct Answer: D) 3) both 1 and 2 option. 31. Cellular respiration takes place in the ..... A) Chloroplast. B) Lungs. C) Chlorophyll. D) Mitochondria. Show Answer Correct Answer: D) Mitochondria. 32. Plants prepare their own food by a process called ..... A) Oxidation. B) Respiration. C) Photosynthesis. D) None of the above. Show Answer Correct Answer: C) Photosynthesis. 33. Animal cells do not have ..... Animal cell does not have ..... A) Membrane Selllel Membrane. B) NukleusNucleus. C) Wall Cellcel Wall. D) Sitoplasmacytoplasm. Show Answer Correct Answer: C) Wall Cellcel Wall. 34. Complex tissue filaments in fish that are branched and folded A) Spiracles. B) Windpipe. C) Lungs. D) Gills. Show Answer Correct Answer: D) Gills. 35. What happens during cellular respiration? A) Glucose is broken down, releasing energy. B) Carbohydrates are released into the bloodstream. C) Water and carbon dioxide are converted into energy. D) None of the above. Show Answer Correct Answer: A) Glucose is broken down, releasing energy. 36. What is the primary purpose of respiration in living organisms? A) To regulate temperature. B) To eliminate waste. C) To produce energy. D) To absorb nutrients. Show Answer Correct Answer: C) To produce energy. 37. After heavy exercise, due to the accumulation of which substance we get muscle cramps? A) Lipoic acid. B) Fumaric acid. C) Lactic acid. D) Malaic acid. Show Answer Correct Answer: C) Lactic acid. 38. Organisms that make energy from the sun are called ..... A) Hetertrophs. B) Autotrophs. C) Carbohydrates. D) Consumer. Show Answer Correct Answer: B) Autotrophs. 39. Normally we take in air through our ..... A) NOSTRILS. B) EARS. C) All the above. D) None of the above. Show Answer Correct Answer: A) NOSTRILS. 40. Which equation shows the reaction for anaerobic respiration A) Carbon dioxide + water $\rightarrow$ glucose and oxygen. B) Glucose + Oxygen $\rightarrow$ lactic acid and energy. C) Glucose + oxygen $\rightarrow$ carbon dioxide and water and energy. D) Glucose $\rightarrow$ lactic acid and energy. Show Answer Correct Answer: D) Glucose $\rightarrow$ lactic acid and energy. 41. ..... is the common passage for food and air in humans A) Larynx. B) Trachea. C) Epiglottis. D) Pharynx. Show Answer Correct Answer: D) Pharynx. 42. The energy needed for photosynthesis is A) Light energy from the sun. B) Chemical energy stored in molecules. C) Potential energy. D) None of the above. Show Answer Correct Answer: A) Light energy from the sun. 43. The partial breakdown of glucose produces A) Tartaric Acid. B) Citric acid. C) Maleic Acid. D) Lactic Acid. Show Answer Correct Answer: D) Lactic Acid. 44. Respiration is a A) Physical process. B) Chemical process. C) Both physical and chemical process. D) None of the above. Show Answer Correct Answer: C) Both physical and chemical process. 45. In fishes it takes place through ..... A) GULLS. B) SKIN. C) LEGS. D) GILLS. Show Answer Correct Answer: D) GILLS. 46. Conversion of pyruvate into ethanol and carbon dioxide in yeast takes place during ..... A) Aerobic respiration. B) Breathing. C) Fermentation. D) None of the above. Show Answer Correct Answer: C) Fermentation. 47. Identify 'x' in the given equation and also find which respiration is it.(C$_{6}$H$_{12}$O$_{6 }$+ X $\rightarrow$ CO$_{2}$ + H$_{2}$O + Energy)Select Accordingly A) Oxygen [6O$_{2}$]$_{, Aerobic Respiration}$. B) Oxygen [O$_{2}$], Anaerobic Respiration. C) All the above. D) None of the above. Show Answer Correct Answer: A) Oxygen [6O$_{2}$]$_{, Aerobic Respiration}$. 48. Cockroaches have a network air tubes called? A) Gills. B) Tracheae. C) Lungs. D) Spiracles. Show Answer Correct Answer: B) Tracheae. 49. What are the inputs, or reactants, that cells use in cellular respiration? A) Carbon dioxide and water. B) Starch and protein. C) Amino acids and glucose. D) Glucose and oxygen. Show Answer Correct Answer: D) Glucose and oxygen. 50. What are the products of anaerobic respiration? A) Glucose and oxygen. B) Carbon dioxide and water. C) Lactic acid. D) Carbon monoxide. Show Answer Correct Answer: C) Lactic acid. 51. A wolf eats a rabbit, that just ate some berries. What would you call the rabbit? A) Producer. B) Primary Consumer. C) 2nd order Heterotrph. D) Omnivore. Show Answer Correct Answer: B) Primary Consumer. 52. How does water decompose into a mixer of hydrogen and oxygen? A) Electric current. B) Chemical reactions. C) All the above. D) None of the above. Show Answer Correct Answer: A) Electric current. 53. How would the absence of sunlight affect a plant's ability to grow? A) The plant could not absorb nutrients from soil. B) The plant could not absorb water from the soil. C) The plant could not produce carbon dioxide and oxygen. D) The plant could not produce food through photosynthesis. Show Answer Correct Answer: D) The plant could not produce food through photosynthesis. 54. Which respiratory organ do fish use? A) Gills. B) Trachea. C) Skin. D) Lungs. Show Answer Correct Answer: A) Gills. 55. Your muscle cells can use lactic-acid fermentation to obtain energy during exercise. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 56. Where in the respiratory system does oxygen from air breathed in pass into the blood? A) Bronchioles. B) Alveoli. C) Bronchi. D) Trachea. Show Answer Correct Answer: B) Alveoli. 57. Which of the following best describes the overall purpose of cellular respiration? A) To use energy from the sun to produce oxygen. B) Take in oxygen in order to be able to produce energy (ATP) Take in oxygen in order to be able to produce energy (ATP). C) Break down food (glucose) in order to produce energy (ATP). D) To use energy from the sun to produce food (glucose). Show Answer Correct Answer: C) Break down food (glucose) in order to produce energy (ATP). 58. Exhaled air contains A) 21% of O2, 0.04% of CO2. B) 16% of O2, .44% of CO2. C) All the above. D) None of the above. Show Answer Correct Answer: B) 16% of O2, .44% of CO2. 59. What is the role of chlorophyll in photosynthesis? A) Chlorophyll provides structural support to plants. B) Chlorophyll absorbs carbon dioxide and releases oxygen. C) Chlorophyll captures light energy and converts it into chemical energy. D) Chlorophyll helps in the process of cell division. Show Answer Correct Answer: C) Chlorophyll captures light energy and converts it into chemical energy. 60. What is the role of the diaphragm in the respiratory process? A) To transport oxygen. B) To facilitate inhalation and exhalation. C) To filter out pollutants. D) To absorb nutrients. Show Answer Correct Answer: B) To facilitate inhalation and exhalation. ← 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 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