This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 6 Respiration In Organisms – Quiz 46 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 6 Respiration In Organisms Quiz 46 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Yeasts respire A) Aerobically. B) Anaerobically. C) All the above. D) None of the above. Show Answer Correct Answer: B) Anaerobically. 2. During inhalation, the diaphragm A) Moves downward. B) Moves upward. C) Moves towards left. D) Moves towards right. Show Answer Correct Answer: A) Moves downward. 3. The exchange of gases takes place in trachea. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 4. Is respiration the same as breathing? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 5. What do the plants release during the respiration? A) Oxygen. B) O2. C) Carbon Dioxide. D) CO2. Show Answer Correct Answer: C) Carbon Dioxide. 6. The two main factors that determine the rate of weathering are the TYPE of rock and ..... A) Music. B) Climate. C) Size of rock. D) Weight of rock. Show Answer Correct Answer: B) Climate. 7. What is the function of gills in fish? A) Absorbing carbon dioxide. B) Assisting in food digestion. C) Protecting a fish's lungs. D) Taking in dissolved oxygen. Show Answer Correct Answer: D) Taking in dissolved oxygen. 8. If the food is broken down with the use of oxygen, it is called ..... respiration A) AEROBIC. B) ANEROBIC. C) All the above. D) None of the above. Show Answer Correct Answer: A) AEROBIC. 9. Which of the following is not a characteristic of Euglena? A) It has chloroplasts. B) It has a cellulosic cell wall. C) It can take in food like animals in the absence of light. D) It can prepare its own food. Show Answer Correct Answer: B) It has a cellulosic cell wall. 10. Plants do respiration ..... A) 24 hours a day. B) During the day time. C) Never. D) When they cannot photosynthesise. Show Answer Correct Answer: A) 24 hours a day. 11. The first step in the process of respiration is the breakdown of glucose into a three carbon molecule called ..... A) Lipids. B) Starch. C) Pyruvate. D) None of the above. Show Answer Correct Answer: C) Pyruvate. 12. We take in air with the help of A) Nostrils. B) Nasal cavity. C) Nose. D) Oxygen. Show Answer Correct Answer: A) Nostrils. 13. In insects, exchange of gases take place through A) Spiracles. B) Gills. C) Lungs. D) None of the above. Show Answer Correct Answer: A) Spiracles. 14. In daylight, Plants A) I) Take in Oxygen and Breathe out Carbon dioxide for respiration. B) Iii) Take in Carbon dioxide and release Oxygen for photosynthesis. C) Iii) Take in Oxygen and release Carbon dioxide for photosynthesis. D) Iv) Both (i) and (ii). Show Answer Correct Answer: D) Iv) Both (i) and (ii). 15. Cellular respiration and photosynthesis are considered to be ..... A) The same equation. B) Opposites of one another. C) Unique in every way. D) Not important at all!. Show Answer Correct Answer: B) Opposites of one another. 16. What is the respiratory organ in leech? A) Skin. B) Lungs. C) Gills. D) None of the above. Show Answer Correct Answer: A) Skin. 17. A cell is the smallest ..... of an organism. A) Structural and functional unit. B) Structural unit. C) Functional unit. D) None of the above. Show Answer Correct Answer: A) Structural and functional unit. 18. Does Oxygen diffuse ..... A) Into the lungs. B) Into the blood stream. C) All the above. D) None of the above. Show Answer Correct Answer: B) Into the blood stream. 19. Identify the main energy source that is a reactant in photosynthesis A) Glucose. B) Sunlight. C) Water. D) Carbon Dioxide. Show Answer Correct Answer: B) Sunlight. 20. Which of the following means "making more of the same kind of organism" ? A) Grow. B) Move. C) Develop. D) Reproduce. Show Answer Correct Answer: D) Reproduce. 21. YEAST is used in bakery, wine and Beer industry, it respires A) Anaerobically. B) Aerobically. C) Both anaerobic and aerobic. D) None of the above. Show Answer Correct Answer: A) Anaerobically. 22. Photosynthesis, the process that plants undergo to make glucose, takes place in the ..... A) Mitochondria. B) Cell wall. C) Chloroplast. D) Stomata. Show Answer Correct Answer: C) Chloroplast. 23. Which among the given statements is true regarding aerobic and anaerobic respiration? A) Aerobic respiration produces more energy. B) Anaerobic respiration produces more energy. C) Anaerobic respiration does not release Carbondioxide. D) All are true. Show Answer Correct Answer: A) Aerobic respiration produces more energy. 24. The process of producing energy by breakdown of food is called ..... A) Photosynthesis. B) Transpiration. C) Respiration. D) Nutrition. Show Answer Correct Answer: C) Respiration. 25. Breathing is a part of the process of respiration during which an organism takes in the oxygen-rich air and gives out air rich in ..... A) OXYGEN. B) CARBON DIOXIDE. C) All the above. D) None of the above. Show Answer Correct Answer: B) CARBON DIOXIDE. ← 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