This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 6 Respiration In Organisms – Quiz 37 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 6 Respiration In Organisms Quiz 37 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Global warming is caused as a result of increase in ..... A) Oxygen. B) Carbon dioxide. C) Nitrogen. D) Water vapour. Show Answer Correct Answer: B) Carbon dioxide. 2. ..... means without air A) Combustion. B) Respiration. C) Anaerobic respiration. D) None of these. Show Answer Correct Answer: C) Anaerobic respiration. 3. What is the primary pigment found in plants? A) Carbon dioxide. B) Hemoglobin. C) Melanin. D) Chlorophyll. Show Answer Correct Answer: D) Chlorophyll. 4. Which of the following organism depend on the process of cell respiration for survival? A) Animals, some algae, and phytoplankton but NOT plants. B) Only animals, since they go through process of cell 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. 5. The sugar organisms need to convert to energy is called A) Sucrose. B) Glucose. C) All the above. D) None of the above. Show Answer Correct Answer: B) Glucose. 6. The number of ATP molecules released in aerobic respiration is A) 38. B) 39. C) 40. D) 41. Show Answer Correct Answer: A) 38. 7. Muscle cramps occur due to accumulation of A) Glucose in the muscles. B) Carbon dioxide and water in the muscles. C) Lactic acid in the muscles. D) Oxygen in the muscles. Show Answer Correct Answer: C) Lactic acid in the muscles. 8. Explain the concept of cellular respiration. A) The process by which cells break down glucose to produce energy. B) The process by which cells break down oxygen to produce energy. C) The process by which cells break down carbon dioxide to produce energy. D) The process by which cells break down water to produce energy. Show Answer Correct Answer: A) The process by which cells break down glucose to produce energy. 9. Breathing is a process that (i) provides O$_{2}$ to the body. (ii) breaks down food to release energy. (iii) helps the body to get rid of CO$_{2 }$(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). 10. The breathing rate for a normal human adult is- A) 5-10. B) 15-18. C) 25-30. D) 70-75. Show Answer Correct Answer: B) 15-18. 11. Frogs breath through ..... when they have tadpoles A) Leg. B) Muscles. C) Gills. D) None of the above. Show Answer Correct Answer: C) Gills. 12. Cellular respiration takes place in the cells of all organisms. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. 13. The accumulation of ..... causes muscles cramps. A) Alcohol. B) Lactic acid. C) Carbondioxide. D) Energy. Show Answer Correct Answer: B) Lactic acid. 14. Insect Breathe Through A) Spiracles. B) Gills. C) Lungs. D) Trachea. Show Answer Correct Answer: A) Spiracles. 15. Which of the following do we NOT use the energy gained through respiration for: A) Movement. B) Growth and Repair. C) Sleeping. D) Building new molecules. Show Answer Correct Answer: C) Sleeping. 16. Which is a product of photosynthesis? A) H$_{2}$O. B) C$_{6}$H$_{12}$O$_{6}$. C) CO$_{2}$. D) O. Show Answer Correct Answer: B) C$_{6}$H$_{12}$O$_{6}$. 17. The characteristic of Bryophta is: A) Have stem, leaves but no roots. B) Have stem, leaves and roots. C) Have stems, leaves, roots and flowers. D) Have no stems, roots or leaves. Show Answer Correct Answer: A) Have stem, leaves but no roots. 18. All living organisms must maintain homeostasis in order to survive. Which statement best describes one way humans maintain homeostasis? A) Temperature is regulated by giving off carbon dioxide. B) Water content is regulated by giving off carbon dioxide. C) Temperature is regulated by sweating. D) Water content is regulated by sweating. Show Answer Correct Answer: C) Temperature is regulated by sweating. 19. The products of photosynthesis serve as the reactants in cellular respiration to provide chemical energy. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 20. Muscle cramps after heavy exercise are caused due to the accumulation of A) I. Alcohol. B) Ii. Uric acid. C) Iii. Lactic acid. D) Iv. Acetic acid. Show Answer Correct Answer: C) Iii. Lactic acid. 21. Which gas is primarily inhaled during respiration? A) Carbon dioxide. B) Oxygen. C) Nitrogen. D) Hydrogen. Show Answer Correct Answer: B) Oxygen. 22. A group of organs in the shape of long pipe with length of 9-10 meters. A) Digestive system. B) Respiratory system. C) Small intestine. D) Large intestine. Show Answer Correct Answer: A) Digestive system. 23. Which of the following organisms respires through tracheal system? A) Earthworm. B) Cockroach. C) Fish. D) Frog. Show Answer Correct Answer: B) Cockroach. 24. Lactic-acid fermentation converts ..... into ATP and a waste product called lactic acid. A) Bacteria. B) Glucose. C) Yeast. D) Energy. Show Answer Correct Answer: B) Glucose. 25. Terrestrial arthropods, like insects, have ..... which are openings to the external environment that allow air into the body. A) Spiracles. B) Bronchioles. C) Trachea. D) Tracheoles. Show Answer Correct Answer: A) Spiracles. ← PreviousNext →Related 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 8Class 7 Science Chapter 6 Respiration In Organisms Quiz 9Class 7 Science Chapter 6 Respiration In Organisms Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books