This quiz works best with JavaScript enabled. Home > Cbse > Class 10 > Science > Life Processes > Class 10 Science Chapter 6 Life Processes – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 6 Life Processes Quiz 6 (43 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Chamber of the heart with thickest wall A) Right Atrium. B) Left Ventricle. C) Right Ventricle. D) Left Atrium. Show Answer Correct Answer: B) Left Ventricle. 2. What is the pigment in chloroplasts that performs photosynthesis? A) Chloroplast. B) Chlorosynthesis. C) Green. D) Chlorophyll. Show Answer Correct Answer: D) Chlorophyll. 3. Assertion:Herbivores have longer small intestine as compared to Carnivores Reason:Food takes more time to digest in Carnivore 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: C) Assertion (A) is true but reason(R) is false. 4. Which of the following is a product of fermentation? A) Methanol. B) Lactic acid. C) Ethanol. D) Oxygen. Show Answer Correct Answer: C) Ethanol. 5. An enzyme 'X' that converts starch to simple sugars is also the first enzyme to mix with food in the digestive tract. Identify 'X' A) Pepsin. B) Amylase. C) Lipase. D) None of these. Show Answer Correct Answer: B) Amylase. 6. Plants need ..... for photosynthesis A) Oxygen. B) Sugar. C) Soil. D) Carbon dioxide. Show Answer Correct Answer: D) Carbon dioxide. 7. A blood vessel which pumps the blood from the heart to the entire body: A) Capillary. B) Artery. C) Vein. D) Haemoglobin. Show Answer Correct Answer: B) Artery. 8. Which of these reactions occur in photosynthesis? A) Carbon dioxide is reduced and water is oxidised. B) Water is reduced and carbon dioxide is oxidised. C) Carbon dioxide and water are oxidised. D) Carbon dioxide and water are reduced. Show Answer Correct Answer: D) Carbon dioxide and water are reduced. 9. What could be the possible explanation for the evolution of a four-chambered heart in mammals as opposed to a two-chambered heart in fishes? A) In fishes oxygenation of blood takes place in heart. B) Fishes do not require energy to maintain their body temperature. C) Fishes have efficient gills. D) Fishes can store more energy than mammals. Show Answer Correct Answer: B) Fishes do not require energy to maintain their body temperature. 10. The correct order of steps in nutrition in human beings is A) Ingestion-assimilation-absorption-digestion-egeston. B) Ingestion-digestion-assimilation-absorption-egestion. C) Ingestion-absorption-digestion-egestion-assimilation. D) Ingestion-digestion-absorption-assimilation-egestion. Show Answer Correct Answer: D) Ingestion-digestion-absorption-assimilation-egestion. 11. What prevents the back flow of blood in heart chambers A) Septum. B) Thick wall. C) Valves. D) Blood pressure. Show Answer Correct Answer: C) Valves. 12. The inner lining of the stomach is protected by one of the following from hydrochloric acid. Choose the correct one A) Pepsin. B) Mucus. C) Bile. D) Salivary amylase. Show Answer Correct Answer: B) Mucus. 13. Which of the following organisms have single circulation? A) Mammals. B) Fishes. C) Birds. D) Reptiles. Show Answer Correct Answer: B) Fishes. 14. Amoeba belongs to which group of microorganisms? A) Virus. B) Fungi. C) Protozoa. D) Bacteria. Show Answer Correct Answer: C) Protozoa. 15. Which of the following statements is/are correct?(i) All green plants can prepare their own food.(ii) Most animals are autotrophs.(iii) Carbon dioxide is not required for photosynthesis.(iv) Oxygen is liberated during photosynthesis.Choose the correct answer from the options below: A) ( i) and (iv). B) (ii) only. C) (ii) and (iii). D) (i) and (ii). Show Answer Correct Answer: A) ( i) and (iv). 16. In plants respiration takes place: A) During day time only. B) During night time only. C) During evening time only. D) During day and night. Show Answer Correct Answer: D) During day and night. 17. Acid work in the stomach A) Intestine. B) Mucosa Kharaz. C) To solve sugar. D) Easy to make Pepson's work. Show Answer Correct Answer: D) Easy to make Pepson's work. 18. One cell-thick vessels are called I. A) Arteries. B) Veins. C) Capillaries. D) None of the above. Show Answer Correct Answer: C) Capillaries. 19. Assertion:in the daytime, CO$_{2}$ generated during respiration is used up for photosynthesis.Reason:There is no CO$_{2}$ release during day. A) (a) Both A and R are true and R is the correct explanation of A. B) Both A and R are true but R is not the correct explanation of A. C) (a) A is true but R is false. D) (a) Both Assertion and Reason are false. Show Answer Correct Answer: A) (a) Both A and R are true and R is the correct explanation of A. 20. Crocodiles have ..... chambered heart. A) Two. B) Three. C) Four. D) None of these. Show Answer Correct Answer: C) Four. 21. Choose the form in which most of the plants absorb nitrogen from the atmosphere? A) Proteins. B) Nitrates and Nitrites. C) Atmospheric Nitrogen. D) Amino Acid. Show Answer Correct Answer: B) Nitrates and Nitrites. 22. In plants, which process is responsible for the movement of water from the roots to the leaves? A) Digestion. B) Photosynthesis. C) Transpiration. D) Respiration. Show Answer Correct Answer: C) Transpiration. 23. Choose The Function Of The Pancreatic Juice From The Following A) Trypsin digests proteins and lipase carbohydrates. B) Trypsin digests emulsified fats and lipase proteins. C) Trypsin and lipase digest fats. D) Trypsin digests proteins and lipase emulsified fats. Show Answer Correct Answer: D) Trypsin digests proteins and lipase emulsified fats. 24. Ziai compilation gains A) CO2 and H2O. B) C6H12O6 and O2. C) CO2 and O2. D) C6H12O6 and H2O. Show Answer Correct Answer: B) C6H12O6 and O2. 25. Excess glucose is stored in the form of glycogen in the ..... A) Pancreas. B) Gall bladder. C) Blood. D) Liver. Show Answer Correct Answer: D) Liver. 26. The continuous contractions and relaxations of the digestive organs is called A) Photosynthesis. B) Expansion. C) Peristalsis. D) Constriction. Show Answer Correct Answer: C) Peristalsis. 27. How many pairs of salivary glands are found in humans? A) 2. B) 4. C) 6. D) 3. Show Answer Correct Answer: D) 3. 28. How does most of the water needed by the plant get into its leaves? A) It enters through the stomata. B) The roots absorb it and then it travels up the stem. C) It's made during a chemical reaction in the leaf. D) The flowers capture water and deliver it to the leaves. Show Answer Correct Answer: B) The roots absorb it and then it travels up the stem. 29. Which process in the human body is primarily responsible for the exchange of oxygen and carbon dioxide? A) Photosynthesis. B) Respiration. C) Excretion. D) Digestion. Show Answer Correct Answer: B) Respiration. 30. Which of the following is the first site for the exchange of inhaled air? A) Alveoli of lungs. B) Blood capillaries of lungs. C) Blood capillaries adjacent to body cells. D) Left auricle of the heart. Show Answer Correct Answer: A) Alveoli of lungs. 31. Exchange of gases in the body cells occurs in the bronchioles. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 32. In what part of carbon dioxide bleeding blood is obtained A) Observe the call and dominant. B) Left and left. C) O and Ta. D) Pulmonary vessel. Show Answer Correct Answer: A) Observe the call and dominant. 33. Which chambers of human heart contain oxygenatedblood? A) Left atrium and left ventricle. B) Left atrium and right ventricle. C) Right atrium and left ventricle. D) Right atrium and right ventricle. Show Answer Correct Answer: A) Left atrium and left ventricle. 34. Which of the following is achieved by utilising ATP? A) Transport of water. B) Transport of minerals. C) Transport of food. D) Transport of oxygen. Show Answer Correct Answer: C) Transport of food. 35. In CAM plants CO$_{2}$ is stored in the form of ..... in the vacuoles. A) Palmitic acid. B) Lactic acid. C) Linoleic acid. D) Malic acid. Show Answer Correct Answer: D) Malic acid. 36. Assertion (A) Herbivores have larger small intestine as compared to carnivores. Reason(R):Complete digestion of food takes places in small intestine 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: B) Both assertion (A) and reason(R) are true but reason (R) is not the correct explanation of assertion (A). 37. The chlorophyll in photosynthesis is used for A) Breaking down water molecule. B) No function. C) Reduction of CO$_{2}$. D) Absorbing light. Show Answer Correct Answer: D) Absorbing light. 38. Oxygen is needed by the body A) To aerate lungs. B) To purify the blood. C) To pump blood in vessels. D) To produce ATP. Show Answer Correct Answer: D) To produce ATP. 39. Which one is one cell thick blood vessel A) Capillaries. B) Artery. C) Veins. D) None of the above. Show Answer Correct Answer: A) Capillaries. 40. Where are proteins first digested? A) Small intestine. B) Stomach. C) Large Intestine. D) Mouth. Show Answer Correct Answer: C) Large Intestine. 41. Which is the first enzyme to mix with food in the digestive tract? A) Trypsin. B) Cellulose. C) Pepsin. D) Amylase. Show Answer Correct Answer: D) Amylase. 42. The process by which food is changed into a form the body can use. A) Respiration. B) Nutrition. C) Synthesis. D) Digestion. Show Answer Correct Answer: D) Digestion. 43. The only reptile having 4-chambered heart is A) Snake. B) Turtle. C) Crocodile. D) Lizard. Show Answer Correct Answer: C) Crocodile. ← PreviousRelated 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 4Class 10 Science Chapter 6 Life Processes Quiz 5 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books