This quiz works best with JavaScript enabled. Home > Class 10 > Class 10 Science Chapter 6 Life Processes – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 6 Life Processes Quiz 9 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Earthworms breathe through their ..... A) Gills. B) Skin. C) Spiracles. D) Lungs. Show Answer Correct Answer: B) Skin. 2. First enzyme that gets mixed with food is A) Lipase. B) Trypsin. C) Pepsin. D) Salivary amylase. Show Answer Correct Answer: D) Salivary amylase. 3. Arteries and veins are connected by a network of extremely narrow tubes called: A) Sieve tubes. B) Capillaries. C) Last night. D) Valves. Show Answer Correct Answer: B) Capillaries. 4. A blood vessel which carries blood back to heart is A) Artery. B) Vein. C) Capillary. D) None of the above. Show Answer Correct Answer: B) Vein. 5. What does the chemical formula C$_{6}$H$_{12}$O$_{6}$ represent? A) Oxygen. B) Carbon dioxide. C) Hydroxide. D) Glucose. Show Answer Correct Answer: D) Glucose. 6. Pericardium is the protective membrane outside the ..... A) Heart. B) Kidney. C) Lungs. D) Stomach. Show Answer Correct Answer: A) Heart. 7. Which describes the life process regulation? A) Breaking down food into molecules usable by cells. B) Taking in food. C) Maintaining a stable internal environment. D) Taking in or releasing oxygen or carbon dioxide. Show Answer Correct Answer: C) Maintaining a stable internal environment. 8. In humans, right auricle receives ..... blood from ..... A) Oxygenated, aorta. B) Deoxygenated, vena cava. C) Oxygenated, vena cava. D) Deoxygenated, aorta. Show Answer Correct Answer: B) Deoxygenated, vena cava. 9. The functional unit of the lungs is the: A) Pulmonary tract. B) Nephron. C) Alveoli. D) Neuron. Show Answer Correct Answer: C) Alveoli. 10. The correct sequence of anaerobic respiration- A) Glucose $\rightarrow$ pyruvate $\rightarrow$ lactic acid. B) Glucose $\rightarrow$ pyruvate $\rightarrow$ carbon dioxide + ethanol. C) Glucose $\rightarrow$ pyruvate $\rightarrow$ ADP$\rightarrow$ lactic acid. D) Glucose $\rightarrow$ pyruvate $\rightarrow$ carbon dioxide + ethanol + energy. Show Answer Correct Answer: D) Glucose $\rightarrow$ pyruvate $\rightarrow$ carbon dioxide + ethanol + energy. 11. Organisms consist of only one cell A) Multicellular. B) Unicellular. C) Organisms can't consist of only one cell. D) None of the above. Show Answer Correct Answer: B) Unicellular. 12. Assertion:Haemoglobin content is more in the children than the adult. Reason:Children have higher metabolic rate and growth rate than the adults. A) Both assertion (A) and reason(R)are true and reason(R)is the correct explanation of assertion(A). B) Both assertion (A) and reason(R) are true but reason (R) is not the correct explanation of assertion (A). C) Assertion (A) is true but reason(R) is false. D) Assertion (A) is false but reason (R)is true. Show Answer Correct Answer: D) Assertion (A) is false but reason (R)is true. 13. A:When air is passed through lime water, it turns milky.R:air contains 78% nitrogen and 21% oxygen. A) Both A and R are true and R is the correct explanation of the A. B) Both A and R are true and R is not the correct explanation of the A. C) A is true but R is false. D) A is false but R is true. Show Answer Correct Answer: B) Both A and R are true and R is not the correct explanation of the A. 14. The exchange of gases ocuurs in ..... A) Nose. B) Mouth. C) Alveoli. D) None of the above. Show Answer Correct Answer: C) Alveoli. 15. Chloroplasts are present in the ..... of the leaf. A) Palisade parenchyma. B) Aerenchyma. C) Sclrenchyma. D) Collenchyma. Show Answer Correct Answer: A) Palisade parenchyma. 16. Main site of photosynthesis A) Leaf. B) Stem. C) Chloroplast. D) Guard cells. Show Answer Correct Answer: C) Chloroplast. 17. Pyruvic acid is converted to lactic acid in the ..... of muscle cells A) Cytoplasm. B) Mitochondria. C) Golgi body. D) None of these. Show Answer Correct Answer: A) Cytoplasm. 18. What is the name for an organism that can produce its own food? A) Heterotroph. B) Autotroph. C) Amoeba. D) Eukaryotic. Show Answer Correct Answer: B) Autotroph. 19. The largest artery in the human body is ..... A) Pulmonary artery. B) Venacava. C) Capillaries. D) Aorta. Show Answer Correct Answer: D) Aorta. 20. More energy is produced in aerobic respiration than anaerobic respiration because in anaerobic respiration is ..... A) Food is incompletely oxidized. B) Very few enzymes are involved. C) Oxygen is not required. D) Alcohol is produced. Show Answer Correct Answer: B) Very few enzymes are involved. 21. How many chambers does a frog's heart have? A) 2. B) 3. C) 4. D) None of the above. Show Answer Correct Answer: B) 3. 22. One cell-thick vessels are called A) ARTERIES. B) VEINS. C) CAPILLARIES. D) PULMONARY ARTERY. Show Answer Correct Answer: C) CAPILLARIES. 23. Proteins after digestion are converted into A) Carbohydrates. B) Small globules. C) Amino acids. D) Starch. Show Answer Correct Answer: C) Amino acids. 24. Photosynthesis is a ..... A) Catabolic process. B) Parabolic process. C) Amphibolic process. D) Photo-chemical process. Show Answer Correct Answer: D) Photo-chemical process. 25. The process of diffusion of solvent particles from the region of less solute concentration to a region of high solute concentration through semi-permeable membrane is known as: A) Diffusion. B) Osmosis. C) Translocation. D) Transpiration. Show Answer Correct Answer: B) Osmosis. ← PreviousNext →Related QuizzesClass 10 Science Chapter 6 Life Processes Quiz 1Class 10 Science Chapter 6 Life Processes Quiz 2Class 10 Science Chapter 6 Life Processes Quiz 3Class 10 Science Chapter 6 Life Processes Quiz 4Class 10 Science Chapter 6 Life Processes Quiz 5Class 10 Science Chapter 6 Life Processes Quiz 6Class 10 Science Chapter 6 Life Processes Quiz 7Class 10 Science Chapter 6 Life Processes Quiz 8Class 10 Science Chapter 6 Life Processes Quiz 10Class 10 Science Chapter 6 Life Processes Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books