This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 6 Respiration In Organisms – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 6 Respiration In Organisms Quiz 7 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How is energy released during the process of respiration? A) By absorbing sunlight directly. B) By converting water into glucose. C) By breaking down glucose in the presence of oxygen. D) By breaking down fats in the absence of oxygen. Show Answer Correct Answer: C) By breaking down glucose in the presence of oxygen. 2. In human beings the respiratory pigment named ..... has high affinity for oxygen.So they take up oxygen from the air in the lungs and carry it to tissues. A) Haemocyanin. B) Haemoglobin. C) All the above. D) None of the above. Show Answer Correct Answer: B) Haemoglobin. 3. Yeast are used to make? A) Curd. B) Wine and beer. C) Bakery items. D) Both (b) and (c). Show Answer Correct Answer: D) Both (b) and (c). 4. Plant release A) O2. B) Co2. C) Nitrogen. D) None of the above. Show Answer Correct Answer: A) O2. 5. If the speed of an object moving along a straight line keeps changing, its motion is said to be A) Uniform Motion. B) Non-uniform Motion. C) Straight Line. D) Curved Line. Show Answer Correct Answer: B) Non-uniform Motion. 6. Which type of respiration is most efficient? A) Aerobic. B) Anaerobic. C) All the above. D) None of the above. Show Answer Correct Answer: A) Aerobic. 7. Which is the physical process in respiratory system? A) Nutrient exchange. B) Oxygen absorption. C) Carbon dioxide release. D) Inhalation and exhalation. Show Answer Correct Answer: D) Inhalation and exhalation. 8. Yeast is used in A) Wine and beer industry. B) Bakery. C) Both the above. D) None of these. Show Answer Correct Answer: A) Wine and beer industry. 9. Which gas is most abundant in Earth's atmosphere? A) Carbon dioxide. B) Oxygen. C) Nitrogen. D) Hydrogen. Show Answer Correct Answer: C) Nitrogen. 10. Which of the following is not a product of aerobic respiration? A) Carbon-dioxide. B) Alcohol. C) Energy. D) Water. Show Answer Correct Answer: B) Alcohol. 11. Which structures hold the trachea together? A) Elastic fibers. B) Smooth muscle layers. C) Alveolar sacs. D) Cartilage rings. Show Answer Correct Answer: D) Cartilage rings. 12. Colour of hemoglobin is A) Colour less. B) Blue. C) Red. D) Green. Show Answer Correct Answer: C) Red. 13. The main source of energy for all life comes from ..... A) The Earth. B) The moon. C) The sun. D) The food we eat/make. Show Answer Correct Answer: C) The sun. 14. Which one is not a non-metal element? A) Hydrogen. B) Aluminium. C) Chlorine. D) Phosphorus. Show Answer Correct Answer: B) Aluminium. 15. If cancer has spread from a tumor into adjoining tissue it is said to be ..... A) Benign. B) Metastasized. C) Malignant. D) Mitosis. Show Answer Correct Answer: C) Malignant. 16. What is an organ which breathing process gets through it A) Nostrils, Nasal cavity. B) Mouth. C) Heart. D) Lungs. Show Answer Correct Answer: A) Nostrils, Nasal cavity. 17. The purpose of cellular respiration is to produce? A) Energy. B) Oxygen. C) Sugar. D) Protein. Show Answer Correct Answer: A) Energy. 18. If the breakdown occurs without the use of oxygen, the respiration is called ..... -respiration A) ANAEROBIC. B) AEROBIC. C) All the above. D) None of the above. Show Answer Correct Answer: A) ANAEROBIC. 19. Any substance that contains only one kind of an Atom is known as an element. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. 20. What is expected of the control in the experiments? A) The color will change just like the variable. B) The color will stay the same and not change. C) The color of the solution will change in all the tests. D) The color will disappear and become colorless. Show Answer Correct Answer: B) The color will stay the same and not change. 21. What gas is needed in order to perform respiration at the cellular level? A) Oxygen. B) Carbon dioxide. C) Hydrogen. D) Nitrogen. Show Answer Correct Answer: A) Oxygen. 22. The process of breakdown of food in the cell is known as A) Breakdown process. B) Food breakdown. C) Digestion. D) Cellular respiration. Show Answer Correct Answer: D) Cellular respiration. 23. A vertical section through different layers of soil is called the A) Layers of soil. B) Soil Profile. C) All of these. D) None of these. Show Answer Correct Answer: B) Soil Profile. 24. What is the name of the opening which does not allow food to enter into the lungs? A) Alveoli. B) Pharynx. C) Trachea. D) Diaphragm. Show Answer Correct Answer: C) Trachea. 25. ..... gas is released when human beings respire. A) Oxygen. B) Nitrogen. C) CO2. D) Argon. Show Answer Correct Answer: C) CO2. ← 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 8Class 7 Science Chapter 6 Respiration In Organisms Quiz 9Class 7 Science Chapter 6 Respiration In Organisms Quiz 10Class 7 Science Chapter 6 Respiration In Organisms Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books