This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 6 Respiration In Organisms – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 6 Respiration In Organisms Quiz 8 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. (Assertion)-Yeasts are used to make wine and beer.(Reason)-They respire anaerobically and during this process yield alcohol. A) Both statements are correct and the reason is the correct explanation. B) Both statements are correct but the reason is not the correct explanation. C) Assertion is wrong and the reason is correct. D) Assertion is correct but the reason is wrong. Show Answer Correct Answer: A) Both statements are correct and the reason is the correct explanation. 2. Insects have a network of air tubes called ..... A) Spiracles. B) Trachea. C) Bronchi. D) None of the above. Show Answer Correct Answer: B) Trachea. 3. No energy is released during A) Exhalation. B) Inhalation. C) Breathing. D) All of these. Show Answer Correct Answer: D) All of these. 4. One of the following organisms can live without oxygen in air. This organism is: A) Amoeba. B) Yak. C) Yeast. D) Leech. Show Answer Correct Answer: C) Yeast. 5. Carbon dioxide and oxygen both enter and leave the leaf at the ..... A) Pore. B) Spongy measophyll. C) Guard cells. D) Stomata. Show Answer Correct Answer: D) Stomata. 6. Which of the following is the Energy currency: A) ADP. B) ATP. C) Mitochondria. D) Nucleus. Show Answer Correct Answer: B) ATP. 7. What are the products in the equation below:CO2+ H2O $\rightarrow$ C6H12O6 + O2 A) CO2+H20. B) ATP+Glucose. C) C6H12O6+O2. D) None of the above. Show Answer Correct Answer: C) C6H12O6+O2. 8. The number of times a person breathes in a minute is termed as ..... A) Breathing rate. B) Breathing point. C) Breathing laps. D) None of the above. Show Answer Correct Answer: A) Breathing rate. 9. Which of the following organisms primarily uses gills for respiration? A) Frog. B) Bird. C) Human. D) Fish. Show Answer Correct Answer: D) Fish. 10. How do plants obtain oxygen for respiration? A) Through photosynthesis. B) By taking it in through their leaves. C) By absorbing it from the soil. D) By obtaining it from the air through their roots. Show Answer Correct Answer: A) Through photosynthesis. 11. Which gas is needed for Cellular Respiration? A) Oxygen. B) Carbon Dioxide. C) Water. D) Glucose. Show Answer Correct Answer: A) Oxygen. 12. 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. 13. 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. 14. 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. 15. Where does gas exchange take place in human lungs? A) Diaphragm. B) Trachea. C) Bronchi. D) Alveoli. Show Answer Correct Answer: D) Alveoli. 16. Where are human lungs present? A) In stomach. B) In mouth. C) Chest cavity. D) In lungs. Show Answer Correct Answer: C) Chest cavity. 17. 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. 18. Air reaches our lungs through the ..... A) Nostril. B) Nasal cavity. C) Wind pipe. D) Chest cavity. Show Answer Correct Answer: C) Wind pipe. 19. The raw material for cellular respiration is A) GLUCOSE. B) SUCROSE. C) FRUCTOSE. D) STARCH. Show Answer Correct Answer: A) GLUCOSE. 20. 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. 21. Breathing rate in human beings in normal condition is A) 12-15 times in a minute. B) 15-18 times in a minute. C) 18-22 times in a minute. D) 22-25 times in a minute. Show Answer Correct Answer: B) 15-18 times in a minute. 22. Which is an example of a population? A) All the animals and plants living in a lake. B) All the different herbivores in a forest. C) All the mahogany trees growing in a forest. D) All the species of animals in Africa. Show Answer Correct Answer: C) All the mahogany trees growing in a forest. 23. What are the 'Spongy Organs' in human body? A) Lungs. B) Salivary Glands. C) Diaphragm. D) Heart. Show Answer Correct Answer: A) Lungs. 24. WHILE HEAVY EXERCISE THERE IS LACK OF A) LACTIC ACID. B) OXYGEN. C) NITROGEN. D) CARBONDIAOXIDE. Show Answer Correct Answer: B) OXYGEN. 25. Evaluate which statement is accurate: A) Oxygen is a product of photosynthesis, carbon dioxide is a product of cellular respiration. B) Carbon dioxide is a product of photosynthesis, oxygen is a product of cellular respiration. C) Glucose is a product of cellular respiration, ATP is a product of photosynthesis. D) Oxygen is a reactant of photosynthesis, carbon dioxide is a product. Show Answer Correct Answer: A) Oxygen is a product of photosynthesis, carbon dioxide is a product of cellular respiration. ← 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 9Class 7 Science Chapter 6 Respiration In Organisms Quiz 10Class 7 Science Chapter 6 Respiration In Organisms Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books