This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 6 Respiration In Organisms – Quiz 23 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 6 Respiration In Organisms Quiz 23 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Taking in air rich in oxygen into th body is called ..... A) Exhalation. B) Inhalation. C) Digestion. D) Excretion. Show Answer Correct Answer: B) Inhalation. 2. State true or false-Breathing is same as respiring. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 3. The young one of a cow is called ..... A) Cub. B) Calf. C) Kitten. D) None of the above. Show Answer Correct Answer: B) Calf. 4. ATP can be used in the cells for the A) Contraction of muscles. B) Protein Synthesis. C) Conduction of nerve impulses. D) All of the above. Show Answer Correct Answer: D) All of the above. 5. What body system exchanges O2 for CO2 A) Respiration. B) Excretion. C) Digestion. D) Nervous. Show Answer Correct Answer: A) Respiration. 6. How are the final products of photosynthesis related to cellular respiration? A) They are the starting materials for cellular respiration. B) They are also the final products for cellular respiration. C) They convert chemical energy into light energy. D) They convert chemical energy into light energy. Show Answer Correct Answer: A) They are the starting materials for cellular respiration. 7. In which part of the cell does photosynthesis take place? A) Vacuole. B) Mitochondria. C) Cell wall. D) Chloroplast. Show Answer Correct Answer: D) Chloroplast. 8. Which is not a part of human respiratory system? A) Lungs. B) Oesophagus. C) Trachea. D) Diaphragm. Show Answer Correct Answer: B) Oesophagus. 9. Respiration occurs with the following in fishes A) Lungs. B) Moist skin. C) Spiracles. D) Gills. Show Answer Correct Answer: D) Gills. 10. ..... is the basic unit of classification. A) Genus. B) Family. C) Species. D) Phylum. Show Answer Correct Answer: C) Species. 11. What is the primary function of the alveoli in the lungs? A) To filter air. B) To exchange gases. C) To produce mucus. D) To regulate blood flow. Show Answer Correct Answer: B) To exchange gases. 12. What is the waste gas given off by cellular respiration? A) Oxygen. B) Carbon dioxide. C) Methane. D) None of the above. Show Answer Correct Answer: B) Carbon dioxide. 13. What happens when we breathe in?(i) Size of our chest increases.(ii) Size of our chest decreases.(iii) Carbon dioxide is removed from our body(iv) Air enters our lungs. A) (i) and (iii) are correct. B) (i) and (iv) are correct. C) (ii) and (iii) are correct. D) (ii) and (iv) are correct. Show Answer Correct Answer: B) (i) and (iv) are correct. 14. Where does the exchange of gases take place? A) Bronchi in the lungs. B) Capillaries in the heart. C) Trachea in the throat. D) Alveoli in the lungs. Show Answer Correct Answer: D) Alveoli in the lungs. 15. Earthworms and frogs breathe through their skin because of which 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. 16. The purpose of cellular respiration is to A) Make water. B) Make ATP. C) Make glucose. D) Make oxygen. Show Answer Correct Answer: B) Make ATP. 17. In plants, light energy is absorbed by pigments such as ..... A) Chlorophyll. B) CO2. C) Photosynthesis. D) Oxygen. Show Answer Correct Answer: A) Chlorophyll. 18. A reaction that eukaryotic and prokaryotic cells use fermentation to obtain energy from food when oxygen levels are low. A) Cellular Respiration. B) Mitochondria. C) Glycolysis. D) Fermentation. Show Answer Correct Answer: D) Fermentation. 19. The process of breakdown of food in the cell with the release of energy A) Anaerobic respiration. B) Cellular respiration. C) Circular respiration. D) Aerobic respiration. Show Answer Correct Answer: B) Cellular respiration. 20. What gas is given off as a result of respiration? A) Oxygen. B) Carbon dioxide. C) Hydrogen. D) Nitrogen. Show Answer Correct Answer: B) Carbon dioxide. 21. How do cells obtain the energy and materials necessary for the work they do? A) They release nitrogen. B) They take in nutrients. C) They move around in the body. D) They produce oxygen and carbon dioxide. Show Answer Correct Answer: B) They take in nutrients. 22. Which of the following is not an advantage of classification? A) Studying the conditions required for life of the organism. B) Placing organisms into different groups. C) Easy identification of different organisms. D) Tracing the origin of organisms. Show Answer Correct Answer: A) Studying the conditions required for life of the organism. 23. Name the breathing organ in frogs that they use on land. A) Gills. B) Lungs. C) Moist Skin. D) Both lungs and moist skin. Show Answer Correct Answer: B) Lungs. 24. Which of these is a product of cellular respiration? A) ATP. B) Carbon dioxide. C) Water. D) All of these are a product of cellular respiration. Show Answer Correct Answer: D) All of these are a product of cellular respiration. 25. What is the main waste product of respiration? A) Carbon dioxide. B) Oxygen. C) Glucose. D) Nitrogen. Show Answer Correct Answer: A) 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