This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 6 Respiration In Organisms – Quiz 42 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 6 Respiration In Organisms Quiz 42 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What are single cell orgamisms A) Yeast. B) Plant. C) Bacteria. D) Animal. Show Answer Correct Answer: A) Yeast. 2. Animals depend upon energy from plants and is required for ..... and growth. A) Photosynthesis. B) Energy. C) Growth. D) Body repair. Show Answer Correct Answer: D) Body repair. 3. Which of the following is the respiratory organ of stems? A) Root hair. B) Stomata. C) Lenticels. D) Lung. Show Answer Correct Answer: C) Lenticels. 4. Tiny air sacs of lungs are called A) Heart. B) Alveoli. C) Diaphragm. D) None of these. Show Answer Correct Answer: B) Alveoli. 5. Describe the role of oceans in the oxygen cycle. A) Oceans have no role in the oxygen cycle. B) Oceans produce oxygen through volcanic activity. C) They produce a significant amount of the Earth's oxygen through photosynthesis by marine plants and phytoplankton. D) They absorb oxygen from the atmosphere and release it into the water. Show Answer Correct Answer: C) They produce a significant amount of the Earth's oxygen through photosynthesis by marine plants and phytoplankton. 6. In insects, exchange of gases takes place through? A) Spiracles. B) Gills. C) Lungs. D) Stomata. Show Answer Correct Answer: A) Spiracles. 7. Cellular Respiration, the process that organisms undergo to turn glucose into ATP (energy), takes place in the ..... A) Mitochondria. B) Cell wall. C) Chloroplast. D) Stomata. Show Answer Correct Answer: A) Mitochondria. 8. ..... occurred during the process of growing human since birth ..... happened during the growth of human sincerely birth A) Enlargement of the SELCELL enlargement. B) Pembahagian selCell division. C) Healing Selcell Restoration. D) None of the above. Show Answer Correct Answer: B) Pembahagian selCell division. 9. The blood vessel that brings oxygenated blood to heart from lungs A) Pulmonary artery. B) Postal cavel vein. C) Coronari artery. D) Pulmonary vein. Show Answer Correct Answer: D) Pulmonary vein. 10. Evaluate each statement and decide which one is TRUE. A) Glucose is product of photosynthesis and Oxygen is product of cell respiration. B) Oxygen is a product of photosynthesis and carbon dioxide is product of cell respiration. C) Carbon dioxide is product of cell respiration and ATP is product of photosynthesis. D) ATP is product of photosynthesis and Cell respiration is product of cell respiration. Show Answer Correct Answer: A) Glucose is product of photosynthesis and Oxygen is product of cell respiration. 11. Why do we get muscle cramps? A) Partial breakdown of glucose to produce lactic acid. B) Complete breakdown of glucose to produce lactic acid. C) Muscle cells respire in presence of oxygen. D) Increased supply of oxygen to the muscles. Show Answer Correct Answer: A) Partial breakdown of glucose to produce lactic acid. 12. What is the main purpose of cellular respiration? A) To break down glucose molecules. B) To release carbon dioxide. C) To produce energy for the cell. D) None of the above. Show Answer Correct Answer: C) To produce energy for the cell. 13. ..... is the energy currency for cellular processes. A) Glucose. B) ATP. C) Starch. D) None of the above. Show Answer Correct Answer: B) ATP. 14. What is the one main difference between fermentation & cellular respiration? A) Fermentation does not occur in animals, while cellular respiration does. B) Fermentation does not require oxygen, cellular respiration does. C) Fermentation does not release energy, cellular respiration does. D) Fermentation does not depend on the sun, cellular respiration does. Show Answer Correct Answer: B) Fermentation does not require oxygen, cellular respiration does. 15. How do plants breathe? A) Through the stem. B) Through the stomata. C) Through the chloroplast. D) None of the above. Show Answer Correct Answer: B) Through the stomata. 16. The process of breathing out air is called ..... A) Inspiration. B) Expiration. C) Breathing. D) No answer. Show Answer Correct Answer: B) Expiration. 17. In which way are photosynthesis and cellular respiration different? A) Cellular respiration stores ATP, while photosynthesis releases ATP. B) Cellular respiration produces oxygen, while photosynthesis uses oxygen. C) Photosynthesis releases energy, while cellular respiration stores energy. D) Photosynthesis uses carbon dioxide, while cellular respiration produces carbon dioxide. Show Answer Correct Answer: D) Photosynthesis uses carbon dioxide, while cellular respiration produces carbon dioxide. 18. The lining of the nasal cavity is covered with a thin film of mucus. What is the importance of the mucus? A) It warms up the inhaled air. B) It helps remove dust from the incoming air. C) It lubricates the passage of air into the respiratory trac. D) It helps dissolve oxygen in the inhaled air for gas exchange. Show Answer Correct Answer: B) It helps remove dust from the incoming air. 19. Where is lactic acid formed A) Yeast. B) Bread. C) Plant. D) Snake. Show Answer Correct Answer: A) Yeast. 20. In what way is photosynthesis and respiration related to each other? A) The reactants of photosynthesis are the reactants of respiration. B) The products of photosynthesis are the reactants of respiration. C) The products of photosynthesis are the products of respiration. D) None of the above. Show Answer Correct Answer: B) The products of photosynthesis are the reactants of respiration. 21. Red blood cells contain a pigment called A) Haemoglobin. B) Respiration. C) Stomata. D) Blood. Show Answer Correct Answer: A) Haemoglobin. 22. In which of the following habitats gills are used for respiration? A) Terrestrial respiration. B) Aquatic respiration. C) Pulmonary respiration. D) All types of respiration. Show Answer Correct Answer: B) Aquatic respiration. 23. Break down of food in the cell with the release of energy is called? A) Cellular respiration. B) Anaerobic respiration. C) Aerobic respiration. D) Exhalation. Show Answer Correct Answer: A) Cellular respiration. 24. Which ecological level includes all the deer living in an area? A) Organism. B) Population. C) Community. D) Ecosystem. Show Answer Correct Answer: B) Population. 25. Plants can respire in? A) Dark. B) Light. C) Both light and dark. D) Morning. Show Answer Correct Answer: C) Both light and dark. ← 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