This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 6 Respiration In Organisms – Quiz 34 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 6 Respiration In Organisms Quiz 34 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Earthworms and frogs breathe through their skin because ofwhich the skin of both the organisms is A) Moist and rough. B) Dry and rough. C) Dry and slimy. D) Moist and slimy. Show Answer Correct Answer: D) Moist and slimy. 2. The number of times a person breaths in a minute is termed as? A) Breathing rate. B) Lungs. C) Inhalation. D) Diaphragm. Show Answer Correct Answer: A) Breathing rate. 3. Anaerobic respiration is also known as A) Photosynthesis. B) Aerobic. C) Fermentation. D) None of the above. Show Answer Correct Answer: C) Fermentation. 4. True or Fales:during cellular respiration cells use oxygen to break down the sugar to produce energy A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 5. Which molecule created by plants is broken down by the human body to provide energy for its life processes? A) Water. B) Oxygen. C) Glucose. D) Carbon dioxide. Show Answer Correct Answer: C) Glucose. 6. Which gas do organisms take in during respiration? A) Oxygen. B) Nitrogen. C) Carbon Dioxide. D) Hydrogen. Show Answer Correct Answer: A) Oxygen. 7. Which of the following is the adaptation of skin of frogs for gaseous exchange? A) Moist and cold. B) Slippery and slimy. C) Thin and folded. D) Moist and rich in blood capillaries. Show Answer Correct Answer: D) Moist and rich in blood capillaries. 8. Exchange of gases in plants takes place through? A) Stomata. B) Soil. C) Buds. D) Entire leaf. Show Answer Correct Answer: A) Stomata. 9. Which of the following are the products of photosynthesis? A) O$_{2}$ + Glucose. B) Glucose$_{ }$+ Sunlight. C) Glucose + CO$_{2 }$. D) CO$_{2 }$+ Sunlight. Show Answer Correct Answer: A) O$_{2}$ + Glucose. 10. S. A large, muscular sheet called ..... forms diaphragm the floor of the chest cavity A) DIAPHRAGM. B) RIBS. C) All the above. D) None of the above. Show Answer Correct Answer: A) DIAPHRAGM. 11. In cockroaches, air enters the body through A) (i) lungs. B) (ii) gills. C) (3) Spiracles. D) (iv) skin. Show Answer Correct Answer: C) (3) Spiracles. 12. The system that digests and absorbs food is ..... A) Urinary system. B) Nervous system. C) Digestive system. D) Respiratory system. Show Answer Correct Answer: C) Digestive system. 13. This passageway is part of both the Respiratory system and the Digestive system. A) Larynx. B) Nasal cavity. C) Pharynx. D) Trachea. Show Answer Correct Answer: C) Pharynx. 14. The vessels are made of special cells, forming the A) Vasular tissue. B) Vacular tissue. C) Vesular tissue. D) Vascular tissue. Show Answer Correct Answer: D) Vascular tissue. 15. What happens to the carbon dioxide produced during respiration in organisms? A) It is excreted through the skin. B) It is stored in the body. C) It is released as a waste product. D) It is converted into oxygen. Show Answer Correct Answer: C) It is released as a waste product. 16. What is the scientific term for the structure that is commonly known as your voicebox? A) Larynx. B) Alveoli. C) Roar. D) Bronchioles. Show Answer Correct Answer: A) Larynx. 17. The percentage of oxygen in inhaled air? A) 21%. B) 0.04%. C) 16.4%. D) 4.4%. Show Answer Correct Answer: A) 21%. 18. The ..... system distributes the digested food and oxygen gas all over the body cells. A) Respiratory. B) Circulatory. C) Urinary. D) Nervous. Show Answer Correct Answer: B) Circulatory. 19. What will happen when diaphragm relaxes and curves upwards? A) Air is forced out of the lungs. B) Rib cage goes up and outwards. C) The volume of the thoracic cavity increases. D) Air pressure inside the thoracic cavity decreases. Show Answer Correct Answer: A) Air is forced out of the lungs. 20. In cows and buffaloes, A) I. The respiratory system is similar to dogs and cats. B) Ii. The respiratory system is similar to humans. C) Iii. They have a unique respiratory system that absorbs oxygen from grass. D) Iv. Both (i) and (ii). Show Answer Correct Answer: D) Iv. Both (i) and (ii). 21. What is 'Breathing Rate'? A) Number of times a Person inhales per minute. B) Number of times a Person respire per minute. C) Number of times a Person breathes per minute. D) Number of times a Person exhales per minute. Show Answer Correct Answer: C) Number of times a Person breathes per minute. 22. Insects have special network of tubes called A) Tracheae. B) Gills. C) Spiracles. D) Lungs. Show Answer Correct Answer: A) Tracheae. 23. Lenticels are found in which of the following parts of a plant? A) Roots. B) Stem. C) Skin of fruits. D) All of these. E) None of these. Show Answer Correct Answer: D) All of these. 24. ..... present inside the nose prevent the dust particles from entering our lungs. A) Bones. B) Fine hair. C) Blood. D) Capillaries. Show Answer Correct Answer: B) Fine hair. 25. What happen if the transport system fails to eliminate the waste products from the cells? A) Becomes poison to the cells. B) Becomes nutrient to the cells. C) Combine with the cells. D) Digested in the stomach. Show Answer Correct Answer: A) Becomes poison to the cells. ← 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