This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Respiration In Organisms > Class 7 Science Chapter 6 Respiration In Organisms – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 6 Respiration In Organisms Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In which form the energy is stored in our body? A) ATP(adenosine triphosphate). B) Thermal energy. C) Electrical energy. D) Mechanical energy. Show Answer Correct Answer: A) ATP(adenosine triphosphate). 2. Animal ..... is fueled by consuming energy from plants. A) Body repair. B) Energy. C) Growth. D) None of the above. Show Answer Correct Answer: C) Growth. 3. Air tubes in insects are also called ..... A) Trachea. B) Lungs. C) All the above. D) None of the above. Show Answer Correct Answer: A) Trachea. 4. In muscles Pyruvate in the absence of oxygen, breaks down to form ..... and energy A) Acetic acid. B) Lactic acid. C) Pyruvic acid. D) None of the above. Show Answer Correct Answer: B) Lactic acid. 5. The splitting of the glucose molecule is called? A) Synthesis. B) Denaturalization. C) Glycolysis. D) None of the above. Show Answer Correct Answer: C) Glycolysis. 6. Larnyx is also called as A) Glotis. B) Epiglottis. C) None of the above. D) All of these. Show Answer Correct Answer: B) Epiglottis. 7. ..... is a process carried out by green plants to make their own food ..... is a process done by plants to produce their own food A) RespirasiRespiration. B) Fotototropismhototropism. C) FotografiPhotography. D) FotosintesisPhotosynthesis. Show Answer Correct Answer: D) FotosintesisPhotosynthesis. 8. What are the two main reactants required for photosynthesis? A) Oxygen and sunlight. B) Glucose and chlorophyll. C) Nitrogen and carbon dioxide. D) Carbon dioxide and water. Show Answer Correct Answer: D) Carbon dioxide and water. 9. ..... (i) ..... respiration occurs in the presence of oxygen. In this process, the food is completely oxidised into ..... (ii) ..... and water.Select the correct option for (i) and (ii) respectively. A) Aerobic, Carbon dioxide. B) Aerobic, Ethanol. C) Anaerobic, Carbon dioxide. D) Anaerobic, Ethanol. Show Answer Correct Answer: A) Aerobic, Carbon dioxide. 10. Earth worm shows which type of respiration? A) Cutaneous respiration. B) Animal respiration. C) All the above. D) None of the above. Show Answer Correct Answer: A) Cutaneous respiration. 11. The food has ..... which is released during ..... A) Stored energy, breathing. B) Glucose, respiration. C) Glucose, breathing. D) Stored Energy, respiration. Show Answer Correct Answer: D) Stored Energy, respiration. 12. During exhalation, the ribs A) Moves out wards. B) Moves upwards. C) Moves downwards. D) Do not move at all. Show Answer Correct Answer: C) Moves downwards. 13. The primary source of energy for life on Earth is ..... A) ATP Energy. B) Oxygen. C) Kinetic Energy. D) Sunlight. Show Answer Correct Answer: D) Sunlight. 14. In which organ is oxygen absorbed into the blood? A) Stomata. B) Nose. C) Gills. D) Mouth. Show Answer Correct Answer: C) Gills. 15. Exhaled 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: C) 16and 4.4. 16. What is the energy currency of the cell produced during aerobic respiration? A) ATP. B) Glucose. C) Water. D) Carbon dioxide. Show Answer Correct Answer: A) ATP. 17. Which of the following organisms can respire anaerobically? A) [D]. Euglena. B) [B]. Yeast. C) [100].Paramecium. D) [TO].Amoeba. Show Answer Correct Answer: B) [B]. Yeast. 18. The oxygen used during respiration is provided by our A) Digestive system. B) Respiratory system. C) Circulatory system. D) None of the above. Show Answer Correct Answer: B) Respiratory system. 19. Glucose molecules store ..... A) Kinetic energy. B) Chemical energy. C) Heat energy. D) Gravitational potential energy. Show Answer Correct Answer: B) Chemical energy. 20. Which of the following animal can breathe through skin as well through lungs- A) Mammal. B) Frog. C) Fish. D) Cockroach. Show Answer Correct Answer: B) Frog. 21. What is Inhalation? A) The giving out of air rich in carbondi oxide is called inhalation. B) Taking in of air rich in carbondioxide is called inhalation. C) The takin in of air rich in oxygen into the body is called inhalation. D) The giving out of air rich in oxygen is called inhalation. Show Answer Correct Answer: C) The takin in of air rich in oxygen into the body is called inhalation. 22. Respiration takes place in A) The lungs. B) The brain. C) The heart. D) The cells. Show Answer Correct Answer: D) The cells. 23. What are tiny holes called in insects? A) Gills. B) Stomata. C) Spiracles. D) Pores. Show Answer Correct Answer: C) Spiracles. 24. Frogs breathe through there ..... A) Gills. B) Lungs. C) Skin. D) A and B. E) None of these. Show Answer Correct Answer: D) A and B. 25. The cell of which species has a cell wall? A) Plant. B) Human. C) Fish. D) Mosquito. Show Answer Correct Answer: A) Plant. 26. Yeast is used in wine industries because it respires. A) Aerobically producing oxygen. B) Aerobically producing alcohol. C) Anaerobically producing CO2. D) Anaerobically producing alcohol. Show Answer Correct Answer: D) Anaerobically producing alcohol. 27. The fishes have lungs for respirstions. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: A) False. 28. Mycoplasma, Belonging to Kingdom Protista, Has: A) Cell wall. B) Cell wall and cell membrane. C) No cell wall only cell membrane. D) None of the above. Show Answer Correct Answer: C) No cell wall only cell membrane. 29. What is produced during anaerobic respiration in humans? A) Glucose. B) Carbon dioxide. C) Oxygen. D) Lactic acid. Show Answer Correct Answer: D) Lactic acid. 30. What is found around alveoli? A) Saliva. B) Pleura. C) Lymphatic nodes. D) Capillaries. Show Answer Correct Answer: D) Capillaries. 31. A series of chemical reactions that convert the energy in food molecules into a usable form of energy called ATP. A) Glycolysis. B) Cellular Respiration. C) Mitochondria. D) Cytoplasm. Show Answer Correct Answer: B) Cellular Respiration. 32. Which best describes respiration? A) A cell process that releases energy from food. B) A cell process that converts carbon dioxide into energy. C) A plant process where chlorophyll produces sugar energy. D) A plant process where sunlight is converted into energy. Show Answer Correct Answer: A) A cell process that releases energy from food. 33. Breathing involves inhalation and exhalation processes. During inhalation, ribs moves A) Downward and outward. B) Upward and inward. C) Downward and inward. D) Upward and outward. Show Answer Correct Answer: D) Upward and outward. 34. Name the organ of the body in which the blood is oxygenated A) Nostril. B) Lungs. C) Kidney. D) Heart. Show Answer Correct Answer: B) Lungs. 35. By what general name the organisms that live both is water and land called? A) Terrestrial organisms. B) Arboreal organisms. C) Amphibian organisms. D) Aquatic organisms. Show Answer Correct Answer: C) Amphibian organisms. 36. The breakdown of glucose occurs in the cells of an organism ( ..... respiration). A) CELLULAR. B) ORAL. C) All the above. D) None of the above. Show Answer Correct Answer: A) CELLULAR. 37. We can sense our breathing by observing with our hand at ..... A) Chest. B) Nose. C) All of them. D) Pulse. Show Answer Correct Answer: C) All of them. 38. In animals like cows buffaloes dog and cat the respiratory organs and the process is similar or different? A) Similar. B) Different. C) All the above. D) None of the above. Show Answer Correct Answer: A) Similar. 39. When breakdown of glucose takes place in the presence of oxygen the respiration is called ..... A) Anaerobic. B) Aerobic. C) Breathing microbe. D) None of the above. Show Answer Correct Answer: B) Aerobic. 40. What is the process of converting sunlight into energy in plants? A) Energy. B) Photosynthesis. C) Cellular respiration. D) Growth. Show Answer Correct Answer: B) Photosynthesis. 41. It is also called as the voicebox A) Larynx. B) Alveoli. C) Bronchi. D) Pharynx. Show Answer Correct Answer: A) Larynx. 42. During heavy exercise, we get cramps in the legs due to the accumulation of A) (i) carbon dioxide. B) (iv) water. C) (ii) lactic acid. D) (iii) alcohol. Show Answer Correct Answer: C) (ii) lactic acid. 43. Cellular respiration occurs in the mitochondria of eukaryotic cells and requires ..... A) Oxygen. B) Cellular Respiration. C) Glycolysis. D) Cytoplasm. E) Mitochondria. Show Answer Correct Answer: A) Oxygen. 44. Rabbits eat grass and foxes eat rabbits.What would cause the highest increase in the number of rabbits? A) Less grass and fewer foxes. B) Less grass and more foxes. C) More grass and fewer foxes. D) More grass and more foxes. Show Answer Correct Answer: C) More grass and fewer foxes. 45. Many different chemical reactions occur during cellular respiration. It is a process that requires certain resources to get started and in turn it produces resources when it is finished. With all of that being said, why do organisms want to perform cellular respiration? What is the main purpose? A) To create much needed O2. B) To make H2O from CO2. C) To harvest energy from food. D) To create glucose. Show Answer Correct Answer: C) To harvest energy from food. 46. In higher animals, respiration occurs through ..... A) Gills. B) Lungs. C) Kidneys. D) Nostrils. Show Answer Correct Answer: B) Lungs. 47. On an average breathing rate of adult human being, at rest is A) Above 25 times per minute. B) Less than 10 times per minute. C) 15-18 times per minute. D) None of these. Show Answer Correct Answer: C) 15-18 times per minute. 48. What is the process by which plants release oxygen into the atmosphere? A) Photosynthesis. B) Fermentation. C) Respiration. D) Transpiration. Show Answer Correct Answer: A) Photosynthesis. 49. The reactants of photosynthesis are A) Sugar and oxygen. B) Water and carbon dioxide. C) Carbon dioxide and oxygen. D) Sugar and carbon dioxide. Show Answer Correct Answer: B) Water and carbon dioxide. 50. 2What is the percentage of oxygen in the inhaled air? A) 1.21%. B) 0.04%. C) 78%. D) 28%. Show Answer Correct Answer: A) 1.21%. 51. These organs help our body to breath except A) Nasal cavity. B) Lungs. C) Mouth. D) Trachea. Show Answer Correct Answer: C) Mouth. 52. Which of the following statement is correct for anaerobic respiration? A) Food is broken down in the absence of oxygen to release energy. B) It is a small process compared to aerobic respiration. C) Breakdown of food occurs in presence of oxygen. D) It produces large amount of energy compared to aerobic respiration. Show Answer Correct Answer: A) Food is broken down in the absence of oxygen to release energy. 53. In humans, breathing rate is fastest during A) Sleeping. B) Talking. C) Running. D) Walking. Show Answer Correct Answer: C) Running. 54. Trachea is also called as A) Glottis. B) Wind pipe. C) Food pipe. D) Epiglottis. Show Answer Correct Answer: B) Wind pipe. 55. What are the primary sources of oxygen in the atmosphere? A) Burning of fossil fuels. B) Photosynthesis and photodissociation of water vapor. C) Volcanic eruptions. D) Chemical reactions in the Earth's core. Show Answer Correct Answer: B) Photosynthesis and photodissociation of water vapor. 56. Choose the correct combinations of functions of breathing: A) . Provides O2 to the body and breaks down food to release energy. B) . Breaks down food to release energy and helps the body to get rid of CO2. C) . Provides O2 to the body and helps the body to get rid of CO2. D) . Breaks down food to release energy and produces water in the cells. Show Answer Correct Answer: C) . Provides O2 to the body and helps the body to get rid of CO2. 57. Choose the flow of cell organizations that are true, the Correct Cell Organization Flow A) Tissues-cells-organs-systems-organisms. B) Sel-Tisu-Organ-Organisma-Sistem. C) Cells-tissues-organs-systems-organisms. D) None of the above. Show Answer Correct Answer: C) Cells-tissues-organs-systems-organisms. 58. Aerobic respiration is the respiration that occurs in the ..... of oxygen and is present in ..... A) Absence, most plants. B) Presence, most plants. C) Presence, yeast. D) Absence, bacteria. Show Answer Correct Answer: B) Presence, most plants. 59. Which of the following organisms depend on the process of cellular respiration for survival? A) Animals, some algae, and phytoplankton, but not plants. B) Only animals, since they are the only organisms that go through the process of cellular respiration. C) Humans only. D) All organisms that break down glucose for food; including plants and animals. Show Answer Correct Answer: D) All organisms that break down glucose for food; including plants and animals. 60. A shark breathes through the ..... A) Skin. B) Gills. C) Lungs. D) Air holes. Show Answer Correct Answer: B) Gills. ← PreviousNext →Related QuizzesScience QuizzesClass 7 QuizzesClass 7 Science Chapter 6 Respiration In Organisms Quiz 1Class 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 8Class 7 Science Chapter 6 Respiration In Organisms Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books