This quiz works best with JavaScript enabled. Home > Cbse > Class 10 > Science > Life Processes > Class 10 Science Chapter 6 Life Processes – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 6 Life Processes Quiz 4 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How many boxes of the human heart are A) 8. B) 2. C) 4. D) 7. Show Answer Correct Answer: C) 4. 2. Conduction of water in plants mainly occur through A) Sieve tubes. B) Stomata. C) Companion cells. D) Tracheids. Show Answer Correct Answer: D) Tracheids. 3. In amoeba, food is digested in the: A) Food vacuole. B) Mitochondria. C) Chloroplast. D) Pseudopodia. Show Answer Correct Answer: A) Food vacuole. 4. Which of the following is not related to vegetative propagation? A) Root. B) Seed. C) Leaf. D) Stem. Show Answer Correct Answer: B) Seed. 5. Identify the correct path of urine in the human body. A) Kidney $\rightarrow$ ureter $\rightarrow$ urinary bladder $\rightarrow$ urethra. B) Kidney $\rightarrow$ urinary bladder $\rightarrow$ urethra $\rightarrow$ ureter. C) Urinary bladder $\rightarrow$ ureter $\rightarrow$ kidney $\rightarrow$ urethra. D) Kidney $\rightarrow$ ureter $\rightarrow$ urethra $\rightarrow$ urinary bladder. Show Answer Correct Answer: A) Kidney $\rightarrow$ ureter $\rightarrow$ urinary bladder $\rightarrow$ urethra. 6. Only partial breakdown of glucose molecule (C$_{6}$H$_{12}$O$_{6}$) takes place in- A) Active respiration. B) Passive respiration. C) Anaerobic respiration. D) Aerobic respiration. Show Answer Correct Answer: C) Anaerobic respiration. 7. Instrument used to measure blood pressure is A) Anemometer. B) Thermometer. C) Sphygmomanometer. D) Barometer. Show Answer Correct Answer: C) Sphygmomanometer. 8. The energy carrier that the cell uses to power its day to day activities is A) Glucose. B) ATP. C) NADH. D) Fadh $ _ {2} $. Show Answer Correct Answer: B) ATP. 9. In unicellular organisms like amoeba gaseous exchange takes place through the process of ..... A) Elimination. B) Osmosis. C) Diffusion. D) Transportation. Show Answer Correct Answer: C) Diffusion. 10. Nitrogenous waste are formed by the breakdown of ..... A) Ammonia. B) Carbohydrates. C) Fat. D) Aminoacids. Show Answer Correct Answer: D) Aminoacids. 11. A plant is kept in dark cupboard for 48 hours before conducting any experiment on photosynthesis to A) Ensure that no photosynthesis occurs. B) Ensure that leaves are free of starch. C) Remove starch from the plant. D) Remove chlorophyll from the leaves. Show Answer Correct Answer: B) Ensure that leaves are free of starch. 12. What is the word equation for aerobic respiration in plants? A) Carbon dioxide + water $\rightarrow$ glucose + oxygen. B) Glucose + carbon dioxide $\rightarrow$ water + oxygen. C) Glucose + oxygen $\rightarrow$ carbon dioxide + water. D) None of the above. Show Answer Correct Answer: A) Carbon dioxide + water $\rightarrow$ glucose + oxygen. 13. Bile juice is secreted by A) STOMACH. B) PANCREAS. C) SMALL INTESTINE. D) LIVER. Show Answer Correct Answer: D) LIVER. 14. The substance in plants and animals that act as an energy currency. A) ATP. B) DNA. C) RNA. D) ADP. Show Answer Correct Answer: A) ATP. 15. Oxygenated blood reaches heart by A) Pulmonary artery. B) Vena cava. C) Aorta. D) Pulmonary vein. Show Answer Correct Answer: D) Pulmonary vein. 16. The autotrophic mode of nutrition requires A) Carbon dioxide and water. B) Chlorophyll. C) Sunlight. D) All of the above. Show Answer Correct Answer: D) All of the above. 17. Earthworms breathe through their ..... A) Skin. B) Spiracles. C) Lungs. D) Gills. Show Answer Correct Answer: A) Skin. 18. First enzyme that gets mixed with food is A) Pepsin. B) Lipase. C) Trypsin. D) Salivary amylase. Show Answer Correct Answer: D) Salivary amylase. 19. Arteries and veins are connected by a network of extremely narrow tubes called: A) Capillaries. B) Valves. C) Sieve tubes. D) Last night. Show Answer Correct Answer: A) Capillaries. 20. 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. 21. What does the chemical formula C$_{6}$H$_{12}$O$_{6}$ represent? A) Hydroxide. B) Carbon dioxide. C) Glucose. D) Oxygen. Show Answer Correct Answer: C) Glucose. 22. Pericardium is the protective membrane outside the ..... A) Lungs. B) Kidney. C) Heart. D) Stomach. Show Answer Correct Answer: C) Heart. 23. Which describes the life process regulation? A) Taking in or releasing oxygen or carbon dioxide. B) Taking in food. C) Maintaining a stable internal environment. D) Breaking down food into molecules usable by cells. Show Answer Correct Answer: C) Maintaining a stable internal environment. 24. In humans, right auricle receives ..... blood from ..... A) Oxygenated, vena cava. B) Oxygenated, aorta. C) Deoxygenated, vena cava. D) Deoxygenated, aorta. Show Answer Correct Answer: C) Deoxygenated, vena cava. 25. The functional unit of the lungs is the: A) Pulmonary tract. B) Nephron. C) Neuron. D) Alveoli. Show Answer Correct Answer: D) Alveoli. 26. 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. 27. 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. 28. 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. 29. 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. 30. The exchange of gases ocuurs in ..... A) Nose. B) Mouth. C) Alveoli. D) None of the above. Show Answer Correct Answer: C) Alveoli. 31. Chloroplasts are present in the ..... of the leaf. A) Palisade parenchyma. B) Sclrenchyma. C) Collenchyma. D) Aerenchyma. Show Answer Correct Answer: A) Palisade parenchyma. 32. Main site of photosynthesis A) Stem. B) Guard cells. C) Leaf. D) Chloroplast. Show Answer Correct Answer: D) Chloroplast. 33. 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. 34. What is the name for an organism that can produce its own food? A) Autotroph. B) Heterotroph. C) Eukaryotic. D) Amoeba. Show Answer Correct Answer: A) Autotroph. 35. The largest artery in the human body is ..... A) Capillaries. B) Pulmonary artery. C) Venacava. D) Aorta. Show Answer Correct Answer: D) Aorta. 36. More energy is produced in aerobic respiration than anaerobic respiration because in anaerobic respiration is ..... A) Oxygen is not required. B) Very few enzymes are involved. C) Food is incompletely oxidized. D) Alcohol is produced. Show Answer Correct Answer: B) Very few enzymes are involved. 37. 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. 38. One cell-thick vessels are called A) CAPILLARIES. B) VEINS. C) ARTERIES. D) PULMONARY ARTERY. Show Answer Correct Answer: A) CAPILLARIES. 39. Proteins after digestion are converted into A) Carbohydrates. B) Small globules. C) Amino acids. D) Starch. Show Answer Correct Answer: C) Amino acids. 40. Photosynthesis is a ..... A) Photo-chemical process. B) Amphibolic process. C) Catabolic process. D) Parabolic process. Show Answer Correct Answer: A) Photo-chemical process. 41. 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) Translocation. C) Transpiration. D) Osmosis. Show Answer Correct Answer: D) Osmosis. 42. Name the tissue in a leaf where plastids are present ..... A) Mesophyll. B) Mitochondria. C) Endodermis. D) Epithelial cell. Show Answer Correct Answer: A) Mesophyll. 43. Numerous small openings are observed under the lower surface of a leaf through a magnifying lens are A) Stomata. B) Veins. C) Lamina. D) Midrib. Show Answer Correct Answer: A) Stomata. 44. Which among the following is necessary to carry out the blood coagulation in a cut or wound? A) Red blood cells. B) Blood plasma. C) Platelets. D) White Blood Cells. Show Answer Correct Answer: C) Platelets. 45. What do fish absorb through their gills? A) Oxygen. B) Oxygen dissolved in water. C) Carbon dioxide. D) Carbon dioxide dissolved in water. Show Answer Correct Answer: B) Oxygen dissolved in water. 46. Lipase acts on ..... A) Amino acids. B) Fats. C) Carbohydrates. D) All of these. Show Answer Correct Answer: B) Fats. 47. Who is the Emullasifing Action A) Clay. B) Gastric juice. C) Piancritic juice. D) Annette. Show Answer Correct Answer: A) Clay. 48. Blood vessel which carries the blood from the heart to the entire body: A) Capillary. B) Vein. C) All. D) Artery. Show Answer Correct Answer: D) Artery. 49. Green plants develop their diet through this process A) Nutrition. B) Breathing. C) Influence. D) Ziai compilation. Show Answer Correct Answer: D) Ziai compilation. 50. What is the mode of nutrition in fungi? A) Autotrophic. B) Saprophytic. C) Parasitic. D) Heterotrophic. Show Answer Correct Answer: B) Saprophytic. 51. 2) the blood vessels leaving the tissues becomes richer in A) Oxygen. B) Carbon dioxide. C) Both the gases equally diffuse. D) No change. Show Answer Correct Answer: B) Carbon dioxide. 52. Which of the following enzymes digests proteins? A) Lipase. B) Amylase. C) Trypsin. D) Peptidases. Show Answer Correct Answer: C) Trypsin. 53. The bloodstream brings oxygen and food to cells. A) Excretion. B) Circulation. C) Growth. D) Synthesis. Show Answer Correct Answer: B) Circulation. 54. The valve present between right atrium and right ventricle. A) Bicuspid. B) Tricuspid. C) Aortic. D) Pulmonary. Show Answer Correct Answer: B) Tricuspid. 55. How are Heterotrophs classified based on mode of feeding? A) Saprophytic nutrition. B) Holozoic nutrition. C) Mutualistic nutrition. D) All of the above. Show Answer Correct Answer: D) All of the above. 56. Which of the following are energy foods? A) Carbohydrates and Fats. B) Proteins and Mineral Salts. C) Vitamins and Minerals. D) Water and Roughage. Show Answer Correct Answer: A) Carbohydrates and Fats. 57. Whats is the main force in the plant that is responsible for the upward movement of water? A) Transpiration pull. B) Adhesion. C) Root pressure. D) Cohesion. Show Answer Correct Answer: A) Transpiration pull. 58. Pancreatic juice helps in the digestion of A) Proteins. B) Proteins and fats. C) Proteins and carbohydrates. D) Proteins, carbohydrates and fats. Show Answer Correct Answer: D) Proteins, carbohydrates and fats. 59. Choose the function of pancreatic juice from following: A) Trypsin digests proteins and lipase digests carbohydrates. B) Trypsin digests emulsified fats and lipase digests proteins. C) Trypsin and lipase digest fats. D) Trypsin digests proteins and lipase digests emulsified fats. Show Answer Correct Answer: D) Trypsin digests proteins and lipase digests emulsified fats. 60. Which blood vessel carries blood away from the heart? A) Artery. B) Capillary. C) Vein. D) None of the above. Show Answer Correct Answer: A) Artery. ← PreviousNext →Related QuizzesScience QuizzesClass 10 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 5Class 10 Science Chapter 6 Life Processes Quiz 6 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books