This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Respiration In Organisms > Class 7 Science Chapter 6 Respiration In Organisms – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 6 Respiration In Organisms Quiz 7 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A process by which glucose, a sugar, is broken into smaller molecules. A) Glycolysis. B) Mitochondria. C) Cellular Respiration. D) Cytoplasm. Show Answer Correct Answer: A) Glycolysis. 2. What is end product of glucose in the absence of oxygen in muscle cells A) Lactic acid. B) Carbon dioxide. C) Alcohol. D) Oxygen. Show Answer Correct Answer: A) Lactic acid. 3. Which of the following use spiracles for respiration? A) Only cockroach. B) Fish & grasshopper. C) Mosquito & cockroach. D) Earthworm & cockroach. Show Answer Correct Answer: C) Mosquito & cockroach. 4. The process that involves the breakdown of food which leads to release of energy in living organisms called as A) Respiration. B) Fermentation. C) Reproduction. D) Breathing rate. Show Answer Correct Answer: A) Respiration. 5. How do organisms get the energy they need? A) Plants get energy from fertilizers and animals get energy from drinking water. B) Plants get energy from glucose produced in the soil, and animals get energy directly from sunlight. C) Plants break down the glucose they produced in photosynthesis, and animals get energy from eating other organisms. D) Plants do not require energy because they do not move, and animals get energy by performing exercise. Show Answer Correct Answer: C) Plants break down the glucose they produced in photosynthesis, and animals get energy from eating other organisms. 6. Which of the following takes place during inhalation? A) Ribs move downwards and outwards. B) Ribs move upward and inward. C) Ribs move downward and inward. D) Ribs move upward and outward. Show Answer Correct Answer: D) Ribs move upward and outward. 7. Lime water turns milky due to the presence of which of the following gases? A) Oxygen. B) Carbon monoxide. C) Nitrogen. D) Carbon dioxide. Show Answer Correct Answer: D) Carbon dioxide. 8. What are the effects of lack of oxygen on the human body? A) Increased energy and alertness. B) Improved lung function and capacity. C) Enhanced immune system response. D) Loss of consciousness and organ damage. Show Answer Correct Answer: D) Loss of consciousness and organ damage. 9. Bronchi get smaller when they reach closer to the lungs tissues and are called Alveoli. Select true or false A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 10. Living things that gain energy by eating other organisms are called A) Megatrophs. B) Heterotrophs. C) Phototrophs. D) Autotrophs. Show Answer Correct Answer: B) Heterotrophs. 11. Main organ of human respiratory system is A) Stomach. B) Liver. C) Heart. D) Lungs. Show Answer Correct Answer: D) Lungs. 12. What is the energy that is produced in cell respiration? A) ADP. B) Sugar. C) ATP. D) None of the above. Show Answer Correct Answer: C) ATP. 13. The respiratory organs for the exchange of gases ..... in different organisms. A) SAME. B) DIFFERENT. C) All the above. D) None of the above. Show Answer Correct Answer: B) DIFFERENT. 14. Every organ in the body is consisted of some ..... A) Organs. B) Glands. C) Tissues. D) Systems. Show Answer Correct Answer: C) Tissues. 15. What type of cells transport oxygen in the blood? A) Neurons. B) Cartilage cells. C) Red blood cells. D) White blood cells. Show Answer Correct Answer: C) Red blood cells. 16. What type of respiration occurs in the absence of oxygen? A) Aerobic respiration. B) External respiration. C) Anaerobic respiration. D) Cellular respiration. Show Answer Correct Answer: C) Anaerobic respiration. 17. Our body needs ..... to perform its functions. A) Oxygen. B) Food. C) Energy. D) Water. Show Answer Correct Answer: C) Energy. 18. What is one of the reactants of cellular respiration? A) Energy. B) Glucose. C) Carbon dioxide. D) Water. Show Answer Correct Answer: B) Glucose. 19. Yeasts are used in A) Wine. B) Bears. C) A and b both. D) Bakery. Show Answer Correct Answer: C) A and b both. 20. Which cell process releases oxygen? A) Cellular Respiration. B) Breathing. C) Fermentation. D) Photosynthesis. Show Answer Correct Answer: D) Photosynthesis. 21. Which of the following is correct about respiration? A) Occurs during day and night. B) Plant only. C) Need sunlight. D) Use carbon dioxide (Carbon dioxide in). Show Answer Correct Answer: A) Occurs during day and night. 22. An adult human being at rest breathes in and out A) 30-33. B) 9-12. C) 21-24. D) 15-18. Show Answer Correct Answer: D) 15-18. 23. What is aerobic respiration? A) None of these. B) When breakdown of glucose occurs with the use of oxygen. C) When breakdown of glucose occurs without the use of oxygen. D) When breakdown of glucose does not occurs. Show Answer Correct Answer: B) When breakdown of glucose occurs with the use of oxygen. 24. Carbon dioxide enters the leave through what opening? A) Stomata. B) Stem. C) Root. D) Stomach. Show Answer Correct Answer: A) Stomata. 25. Which of the following is a product of cellular respiration? A) Oxygen. B) Glucose. C) Radiant Energy. D) Water. Show Answer Correct Answer: D) Water. 26. What is the chemical equation for aerobic respiration? A) 2h2o + 2nadh + 6O2 $\rightarrow$ 6h2o + 2nad + + 4h + + 3ATP. B) C6H12O6 + 6O2 $\rightarrow$ 6CO2 + 6H2O + Energy. C) C6H12O6 + 6O2 $\rightarrow$ 6CO2 + 6H2O + Heat. D) C6H12O6 + 6O2 $\rightarrow$ 6CO2 + 6H2O + ATP. Show Answer Correct Answer: B) C6H12O6 + 6O2 $\rightarrow$ 6CO2 + 6H2O + Energy. 27. The two upper chambers are called A) Aorta. B) Atrium. C) Ventricle. D) None of the above. Show Answer Correct Answer: B) Atrium. 28. In which organisms Anarobic respirationis present? A) Yeast. B) Bacteria. C) Humans. D) Fungi. Show Answer Correct Answer: A) Yeast. 29. What happens to the temperature of inhaled air when it reaches the lungs? A) It becomes the same as body temperature. B) It cools down. C) It remains the same. D) It heats up significantly. Show Answer Correct Answer: A) It becomes the same as body temperature. 30. Scientists are studying cellular respiration in a river ecosystem that has plants, animals, and decomposers (which consume dead things). Which group or groups of organisms in the river carry out cellular respiration? A) Plants. B) Animals and decomposers. C) All organisms in the river. D) Animals. Show Answer Correct Answer: C) All organisms in the river. 31. Which part of the Respiratory System plays a major role in speech? A) Pharynx. B) Larynx. C) Trachea. D) Nose. Show Answer Correct Answer: B) Larynx. 32. Rings of cartilage present in the throat ensure that A) The air passage does not collapse. B) The throat is filled with mucus. C) The throat has fine hairs. D) None of the above. Show Answer Correct Answer: A) The air passage does not collapse. 33. Plants need sunlight to ..... A) Plants do not need sunlight. B) Keep the plant warm. C) Breathe. D) Make food for the plant. Show Answer Correct Answer: D) Make food for the plant. 34. Identify the organism (s) that depend on photosynthesis for survival A) Plants, algae, and phytoplankton. B) Mammals. C) Amphibians and reptiles. D) Every living organism, in some manner, depends on photosynthesis. Show Answer Correct Answer: D) Every living organism, in some manner, depends on photosynthesis. 35. During inhalation, the ribcage is A) Upward and outward. B) Inward and downward. C) All the above. D) None of the above. Show Answer Correct Answer: A) Upward and outward. 36. Which of the following are the reactants of respiration? A) O $ _ {2} $ + CO $ _ {2} $. B) H$_{2}$O + CO$_{2 }$+ Sunlight. C) H$_{2}$O + Glucose$_{ }$. D) Glucose + O$_{2}$. Show Answer Correct Answer: D) Glucose + O$_{2}$. 37. Muscular floor of chest cavity A) Diaphragm. B) Trachea. C) Nostrils. D) Lungs. Show Answer Correct Answer: A) Diaphragm. 38. Which most accurately describes how plants and animals obtain the energy they need for growth and survival? A) Animals produce energy through photosynthesis, while plants produce energy through respiration. B) Animals produce energy through respiration, while plants produce energy through photosynthesis. C) Molecules are broken down during photosynthesis to release stored energy. D) Molecules are broken down during respiration to release stored energy. Show Answer Correct Answer: D) Molecules are broken down during respiration to release stored energy. 39. Yeasts can survive in the absence of air. They are called anaerobes A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. 40. Green plants are producers that begin the flow of energy between organisms in a food web when they- A) Reproduce by generating seeds. B) Absorb water and nutrients through the soil. C) Release oxygen into the air. D) Make their own food using sunlight. Show Answer Correct Answer: D) Make their own food using sunlight. 41. Which equation best represents respiration? A) Sugar + Oxygen $\rightarrow$ Carbon dioxide + Water + Energy. B) Sugar + Energy + Water $\rightarrow$ Carbon Dioxide + Oxygen. C) Carbon dioxide + Water $\rightarrow$ Oxygen + Sugar + Energy. D) Oxygen + Water $\rightarrow$ Energy + Sugar + Carbon dioxide. Show Answer Correct Answer: A) Sugar + Oxygen $\rightarrow$ Carbon dioxide + Water + Energy. 42. Where in the cell does aerobic respiration take place? A) Cell membrane. B) Cytoplasm. C) Mitochondria. D) Nucleus. Show Answer Correct Answer: C) Mitochondria. 43. What is the primary difference between aerobic and anaerobic respiration? A) Aerobic respiration produces more energy than anaerobic respiration. B) Anaerobic respiration occurs only in plants. C) Both types of respiration require the same amount of oxygen. D) The primary difference is that aerobic respiration requires oxygen, whereas anaerobic respiration does not. Show Answer Correct Answer: D) The primary difference is that aerobic respiration requires oxygen, whereas anaerobic respiration does not. 44. Organisms which respire in presence of oxygen is called A) Microbe. B) Aerobic. C) Anaerobic. D) None of these. Show Answer Correct Answer: B) Aerobic. 45. A LIVING THING ..... A) CAN GROW. B) CAN'T GROW. C) All the above. D) None of the above. Show Answer Correct Answer: A) CAN GROW. 46. Muscle cells are produced in? A) Human beings. B) Yeast. C) Animals. D) Lactic acid. Show Answer Correct Answer: D) Lactic acid. 47. You (a human) breathe in oxygen, and breathe out carbon dioxide. This is an example of which characteristic of life? A) Nutrition. B) Sensitivity. C) Respiration. D) None of the above. Show Answer Correct Answer: C) Respiration. 48. The function of the nervous system is ..... A) Digestion. B) Sensation. C) Respiration. D) Excretion. Show Answer Correct Answer: B) Sensation. 49. The fishes have lungs for Respiration A) True. B) Maybe. C) False. D) None of the above. Show Answer Correct Answer: C) False. 50. What is the organ used in plants for respiration? A) Gills. B) Stomata. C) Lungs. D) None of the above. Show Answer Correct Answer: B) Stomata. 51. When we breathe in we ..... our ribs and ..... our diaphragm A) Lift, flatten. B) Lower, rise. C) All the above. D) None of the above. Show Answer Correct Answer: A) Lift, flatten. 52. The right lung is A) Three lobed. B) Two lobed. C) Not lobed. D) None of the above. Show Answer Correct Answer: A) Three lobed. 53. The process of converting sunlight energy into chemical energy stored in a molecule is called A) Carbon dioxide. B) Photosynthesis. C) Mitochondria. D) Cellular respiration. Show Answer Correct Answer: B) Photosynthesis. 54. The lichen is a relationship between ..... A) Alga and bacteria. B) Alga and fungi. C) Fungi and bacteria. D) Bacteria and yeast. Show Answer Correct Answer: B) Alga and fungi. 55. How does deforestation affect the oxygen cycle? A) Has no impact on oxygen production. B) Causes oxygen to be released into the atmosphere. C) Reduces oxygen production. D) Increases oxygen production. Show Answer Correct Answer: C) Reduces oxygen production. 56. Living things move A) In search of food. B) In search of shelter. C) To protect themselves from enemies. D) All of the above. Show Answer Correct Answer: D) All of the above. 57. The major excretory product in humans is A) Urine. B) Urea. C) Both Urine and Urea. D) None of these. Show Answer Correct Answer: B) Urea. 58. What are the products obtained by anaerobic respiration in yeast? A) Ethanol + Carbon dioxide + Energy. B) Lactic acid + Energy. C) Pyruvate. D) Carbon dioxide + Water + Energy. Show Answer Correct Answer: A) Ethanol + Carbon dioxide + Energy. 59. A group of similar cells that perform the same function A) Organ system. B) Organism. C) Tissues. D) Organ. Show Answer Correct Answer: C) Tissues. 60. Humans can experience BOTH PHOTOSYNTHESIS AND RESPIRATION. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. ← 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 8Class 7 Science Chapter 6 Respiration In Organisms Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books