This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 6 Respiration In Organisms – Quiz 30 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 6 Respiration In Organisms Quiz 30 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The MAIN thing Decomposers do for the the soil is the following: A) Store moisture. B) Burrow deep in the soil. C) Make space for air and water. D) Break down and digest dead organisms. Show Answer Correct Answer: D) Break down and digest dead organisms. 2. What is absorbed by the tree roots and transported to the leaves? A) Air. B) Water. C) Carbon. D) Glucose. Show Answer Correct Answer: B) Water. 3. ..... is the general process in which organisms convert sugars into biochemical energy using Oxygen A) Pollination. B) Respiration. C) Carbonation. D) Transpiration. Show Answer Correct Answer: B) Respiration. 4. Gaseous exchange in fish and earthworm occurs respectively through A) Gills and spiracles. B) Lungs and gills. C) Gills and skin. D) Lungs in both. Show Answer Correct Answer: C) Gills and skin. 5. Guess who am I?a) It is a metabolic process of breaking down of glucose into carbon dioxide and water. A) Cellular Respiration. B) Aerobic Respiration. C) Breathing. D) Anaerobic Respiration. Show Answer Correct Answer: A) Cellular Respiration. 6. Choose the correct formula of Calcium Bicarbonate. A) $CaCO_3$. B) $CAC_2$. C) $CA\left(HCO_3\right)\_2$. D) None of the above. Show Answer Correct Answer: C) $CA\left(HCO_3\right)\_2$. 7. What is the significance of carbon dioxide in respiration? A) Carbon dioxide is a waste product that has no role in respiration. B) Carbon dioxide is used to create energy in the form of ATP. C) Carbon dioxide is only produced during exercise and not at rest. D) Carbon dioxide is significant in respiration as it regulates breathing and maintains blood pH. Show Answer Correct Answer: D) Carbon dioxide is significant in respiration as it regulates breathing and maintains blood pH. 8. Durning exhalation, the ribs A) Move outwards. B) Move downwards. C) Move upwards. D) None of this. Show Answer Correct Answer: B) Move downwards. 9. Name the two types of respiration. A) Cellular respiration and transpiration. B) Photosynthesis and fermentation. C) Aerobic respiration and anaerobic respiration. D) Inhalation and exhalation. Show Answer Correct Answer: C) Aerobic respiration and anaerobic respiration. 10. The respiration in roots takes place by ..... process A) Diffusion. B) Osmosis. C) Exchange. D) None of the above. Show Answer Correct Answer: A) Diffusion. 11. The most common substrate for respiration is: A) Fats. B) Amino acids. C) Glucose. D) Sucrose. Show Answer Correct Answer: C) Glucose. 12. When we exhale which of the following things happens: A) Diaphragm relaxes. B) Diaphragm becomes dome shaped. C) Chest cavity contracts. D) All of the above. Show Answer Correct Answer: D) All of the above. 13. Blood consists of plasma, RBC, WBC and platelets. Blood is red due to the presence of a white pigment, Haemoglobin. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 14. Respiration results in the breakdown of- A) Acids. B) Salts. C) Glucose. D) Starch. Show Answer Correct Answer: C) Glucose. 15. What tissue regulates gas exchange A) Stomata. B) Chloroplast. C) Flam. D) Xylem. Show Answer Correct Answer: A) Stomata. 16. Respiration is the A) Intake of oxygen and release of carbon dioxide over a membrane. B) Mechanical movement to inhale and exhale air. C) Release of energy from food inside cells. D) Feature that enable an animal to survive in its habitat. Show Answer Correct Answer: C) Release of energy from food inside cells. 17. Respiration is a vital function that all living things carry out. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 18. What is the function of hair in nose? A) To secrete mucus. B) To trap dust particles. C) To protect mucus glands. D) To present germs from entering the lungs. Show Answer Correct Answer: B) To trap dust particles. 19. Is there difference between breathing and respiration A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 20. Lungs are present in the A) Chest Cavity. B) Nasal cavity. C) Respiration. D) Diaphragm. Show Answer Correct Answer: A) Chest Cavity. 21. Please select who performs cellular respiration: A) Animals. B) Both animals and plants. C) Plants. D) None of the above. Show Answer Correct Answer: B) Both animals and plants. 22. Which process is used in making wine in wineries? A) Aerobic respiration. B) Photosynthesis. C) Anaerobic respiration. D) None of the above. Show Answer Correct Answer: C) Anaerobic respiration. 23. Chemical formula of Glucose is: A) $ C_6H_6o_ {12} $. B) $C_{12}H_6O_{12}$. C) $C_6O_{12}H_6$. D) $ Tashq $. Show Answer Correct Answer: A) $ C_6H_6o_ {12} $. 24. Where are platelets found? A) Heart. B) Blood vessel. C) Chest cavity. D) Blood. Show Answer Correct Answer: D) Blood. 25. Which statement is true for both photosynthesis and cellular respiration? A) They both occur in the mitochondria. B) They both are required for a cell to produce ATP. C) They both produce oxygen. D) They both have sunlight as a reactant. Show Answer Correct Answer: B) They both are required for a cell to produce ATP. ← 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