This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Respiration In Organisms > Class 7 Science Chapter 6 Respiration In Organisms – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 6 Respiration In Organisms Quiz 9 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. N. In fishes it takes place through gills and in insects through the ..... A) NOSE. B) TRACHEA. C) SKIN. D) GILLS. Show Answer Correct Answer: B) TRACHEA. 2. In cockroach air enters through A) Skin. B) Lungs. C) Spiracles. D) Gills. Show Answer Correct Answer: C) Spiracles. 3. On an average adult human being at rest breaths in a minute A) 21-25 times. B) 18-21 times. C) 15-18 times. D) 11-16 times. Show Answer Correct Answer: C) 15-18 times. 4. Organism breath with the help of machine. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 5. In which option below, is written about spiracles A) Small openings on the sides of the body of cockroach. B) Big openings on the sides of the body of cockroach. C) None of these. D) I don't know the answer. Show Answer Correct Answer: A) Small openings on the sides of the body of cockroach. 6. Name the type of respiration that causes muscle cramps. A) Aerobic respiration. B) Anaerobic respiration. C) Both (a) and (b). D) None of these. Show Answer Correct Answer: B) Anaerobic respiration. 7. Both photosynthesis & respiration require sunlight. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 8. Insects have a special network of tubes called A) Iv. lungs. B) I. gills. C) 3.spiracles. D) 2.tracheae. Show Answer Correct Answer: D) 2.tracheae. 9. Inhalation and exhalation of air is called ..... A) Anaerobic respiration. B) Breathing. C) Respiration. D) Aerobic respiration. Show Answer Correct Answer: B) Breathing. 10. Which animal breath through skin and lungs A) Earthworm. B) Fish. C) Snake. D) Frog. Show Answer Correct Answer: D) Frog. 11. Select the correct statement out of the following: A) External respiration takes place inside the cells. B) Internal respiration is a mechanical process. C) During aerobic respiration, oxidation of glucose occurs to produce carbon dioxide, water and energy. D) Anaerobic respiration in muscles of humans produces ethanol and carbon dioxide. Show Answer Correct Answer: C) During aerobic respiration, oxidation of glucose occurs to produce carbon dioxide, water and energy. 12. Which organ is damaged by smoking? A) Liver. B) Lungs. C) Heart. D) Kidney. Show Answer Correct Answer: B) Lungs. 13. The tracheal tubes have openings called A) Trachea. B) Lungs. C) Spiracles. D) Gills. Show Answer Correct Answer: C) Spiracles. 14. The products of photosynthesis inhibit the reactants in cellular respiration in the presence of light. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 15. The basic structural and functional unit of a living organism is ..... A) Cell. B) Organ system. C) Organ. D) Tissue. Show Answer Correct Answer: A) Cell. 16. Animals get the materials for cellular respiration from: A) Their food and the air. B) Water and their food. C) Air and water. D) The sun and water. Show Answer Correct Answer: A) Their food and the air. 17. Oxygen and carbon dioxide move into and out of cells. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 18. Organisms that obtain their organic material from other organisms A) Consumers. B) Autotrophs. C) Producers. D) None of the above. Show Answer Correct Answer: A) Consumers. 19. Breathing involves the movement of the ..... and the ..... A) Diaphragm, nostrils. B) Diaphragm, lungs. C) Diaphragm, rib-cage. D) None of the above. Show Answer Correct Answer: C) Diaphragm, rib-cage. 20. What do yeast yield while respiring? A) Carbon dioxide and water. B) Lactic acid. C) Oxygen. D) Alcohol. Show Answer Correct Answer: D) Alcohol. 21. Which is one of the processes/factors that produces ethanol in yeast during anaerobic respiration? A) LACTIC ACID. B) The CITRIC ACID CYCLE. C) FERMENTATION. D) CARBON DIOXIDE. Show Answer Correct Answer: C) FERMENTATION. 22. Which of the following has spesific transport system? A) Fish. B) Amoeba. C) Yeast. D) Mucor. Show Answer Correct Answer: A) Fish. 23. The tiny holes on the back of a plant's leaves that allow Oxygen and Carbon Dioxide to flow through are called what? A) Stomata. B) Chloroplast. C) Pigment. D) Mitochondria. Show Answer Correct Answer: A) Stomata. 24. The ..... carries air to the right and left bronchus. A) Trachea. B) Esophagus. C) Bronchioles. D) Alveoli. Show Answer Correct Answer: A) Trachea. 25. Roots respire through ..... A) Lenticles. B) Stomata. C) Air spaces. D) Spiracles. Show Answer Correct Answer: C) Air spaces. 26. Why do complex organisms need transport systems? A) Diffusion does not occur in simple organisms. B) Diffusion does not occur in complex organisms. C) Simple organisms have a larger surface area to volume ratio. D) Complex organisms have a smaller surface area to volume ratio. Show Answer Correct Answer: B) Diffusion does not occur in complex organisms. 27. An organism that obtains energy by eating other organisms. A) Producer. B) Dekposer. C) Detriov. D) Consumer. Show Answer Correct Answer: D) Consumer. 28. Which of the following means water leaving a plant's leaves as a gas? A) Precipitation. B) Evaporation. C) Transpiration. D) Condensation. Show Answer Correct Answer: C) Transpiration. 29. Organisms ..... consist of one cell, while organisms ..... consist of many cells ..... organisms are made up of one cell, while ..... organisms are made up of a lot of cells A) Unisel, monoselunicellular, monocellular. B) Unisel, multiselunicellular, multicellular. C) Monosel, multiselmonocellular, multicellular. D) Multisel, uniselmulticellular, unicellular. Show Answer Correct Answer: B) Unisel, multiselunicellular, multicellular. 30. Which of the following is necessary to perform various bio-logical activities in all living organisms? A) Respiration. B) Circulation. C) Food. D) Energy. Show Answer Correct Answer: D) Energy. 31. Breathing is a process that(i) provides O2 to the body.(ii) breaks down food to release energy.(iii) helps the body to get rid of CO2(iv) produces water in the cells.Which of the following gives the correct combination of functions of breathing? A) (i) and (ii). B) (ii) and (iii). C) (i) and (iii). D) (ii) and (iv). Show Answer Correct Answer: C) (i) and (iii). 32. Simple organisms such as unicellular organisms ..... A) Do not have a specialised transport system. B) Need a special transport system. C) All the above. D) None of the above. Show Answer Correct Answer: A) Do not have a specialised transport system. 33. During exhalation our ribs move A) Inwards. B) Outwards. C) Move upwards. D) None of these. Show Answer Correct Answer: C) Move upwards. 34. The mounaineers carry oxygen with them because: A) The pressure of air is higher than that on the ground. B) At an altitudes of more than 5km there is no air. C) The temparature of air is higher than that on the ground. D) The amount of air available to a person is less than that available on the ground. Show Answer Correct Answer: D) The amount of air available to a person is less than that available on the ground. 35. What is the name of the organ which expand and contract while breathing? A) Heart. B) Lungs. C) Diaphragm. D) Both b and c. Show Answer Correct Answer: D) Both b and c. 36. Which of the following is a part of the respiratory system? A) Stomach. B) Heart. C) Lungs. D) Large intestines. Show Answer Correct Answer: C) Lungs. 37. True of False. Mitosis occurs in both prokaryotic and eukaryotic cells. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 38. Plants carry out photosynthesis only during the day and respiration only at night. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 39. ..... are needed for growth and development A) Digestion. B) Nutrient. C) Energy. D) Ingestion. Show Answer Correct Answer: B) Nutrient. 40. Plants exchange gases through ..... A) Stomata. B) Guard cells. C) Epidermal cells. D) None of the above. Show Answer Correct Answer: A) Stomata. 41. We start ..... whenever we fill drowsy or sleepy. A) Coughing. B) Yawning. C) Eating. D) All of the above. Show Answer Correct Answer: B) Yawning. 42. During aerobic respiration, glucose is broken down into ..... and energy using oxygen. A) Carbon dioxide and hydrogen. B) Oxygen and water. C) Carbon dioxide and water. D) Nitrogen and water. Show Answer Correct Answer: C) Carbon dioxide and water. 43. Taking in air rich in oxygen into th body is called ..... A) Inhalation. B) Digestion. C) Exhalation. D) Excretion. Show Answer Correct Answer: A) Inhalation. 44. State true or false-Breathing is same as respiring. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 45. The young one of a cow is called ..... A) Cub. B) Calf. C) Kitten. D) None of the above. Show Answer Correct Answer: B) Calf. 46. ATP can be used in the cells for the A) Contraction of muscles. B) Protein Synthesis. C) Conduction of nerve impulses. D) All of the above. Show Answer Correct Answer: D) All of the above. 47. What body system exchanges O2 for CO2 A) Excretion. B) Digestion. C) Nervous. D) Respiration. Show Answer Correct Answer: D) Respiration. 48. How are the final products of photosynthesis related to cellular respiration? A) They are the starting materials for cellular respiration. B) They are also the final products for cellular respiration. C) They convert chemical energy into light energy. D) They convert chemical energy into light energy. Show Answer Correct Answer: A) They are the starting materials for cellular respiration. 49. In which part of the cell does photosynthesis take place? A) Vacuole. B) Mitochondria. C) Cell wall. D) Chloroplast. Show Answer Correct Answer: D) Chloroplast. 50. Which is not a part of human respiratory system? A) Trachea. B) Lungs. C) Oesophagus. D) Diaphragm. Show Answer Correct Answer: C) Oesophagus. 51. Respiration occurs with the following in fishes A) Spiracles. B) Lungs. C) Moist skin. D) Gills. Show Answer Correct Answer: D) Gills. 52. ..... is the basic unit of classification. A) Phylum. B) Family. C) Species. D) Genus. Show Answer Correct Answer: C) Species. 53. What is the primary function of the alveoli in the lungs? A) To regulate blood flow. B) To produce mucus. C) To exchange gases. D) To filter air. Show Answer Correct Answer: C) To exchange gases. 54. What is the waste gas given off by cellular respiration? A) Oxygen. B) Carbon dioxide. C) Methane. D) None of the above. Show Answer Correct Answer: B) Carbon dioxide. 55. What happens when we breathe in?(i) Size of our chest increases.(ii) Size of our chest decreases.(iii) Carbon dioxide is removed from our body(iv) Air enters our lungs. A) (i) and (iii) are correct. B) (i) and (iv) are correct. C) (ii) and (iii) are correct. D) (ii) and (iv) are correct. Show Answer Correct Answer: B) (i) and (iv) are correct. 56. Where does the exchange of gases take place? A) Trachea in the throat. B) Capillaries in the heart. C) Bronchi in the lungs. D) Alveoli in the lungs. Show Answer Correct Answer: D) Alveoli in the lungs. 57. Earthworms and frogs breathe through their skin because of which the skin of both the organisms is: A) . Moist and rough. B) . Dry and rough. C) . Dry and slimy. D) . Moist and slimy. Show Answer Correct Answer: D) . Moist and slimy. 58. In plants, light energy is absorbed by pigments such as ..... A) CO2. B) Chlorophyll. C) Photosynthesis. D) Oxygen. Show Answer Correct Answer: B) Chlorophyll. 59. A reaction that eukaryotic and prokaryotic cells use fermentation to obtain energy from food when oxygen levels are low. A) Fermentation. B) Glycolysis. C) Cellular Respiration. D) Mitochondria. Show Answer Correct Answer: A) Fermentation. 60. What gas is given off as a result of respiration? A) Carbon dioxide. B) Hydrogen. C) Oxygen. D) Nitrogen. Show Answer Correct Answer: A) Carbon dioxide. ← 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