This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 11 Transport In Plants – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 11 Transport In Plants Quiz 11 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Ions from soil reach to xylem of root through- A) Active uptake only. B) Passive uptake only. C) Only diffusion. D) Active or passive uptake or a combination of both. Show Answer Correct Answer: D) Active or passive uptake or a combination of both. 2. Movement in the phloem tissue goes in one direction. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 3. Which environmental factor is most likely to be responsible for a plant to wilt? A) An increase in humidity. B) A decrease in the amount of available water. C) A decrease in wind speed. D) A decrease in light intensity. Show Answer Correct Answer: B) A decrease in the amount of available water. 4. Which of the following is a dead tissue? A) Cortex. B) Spongy mesophyll. C) Phloem. D) Xylem. Show Answer Correct Answer: D) Xylem. 5. What is the most abudant solute in phloem sap? A) Minerals. B) Hormones. C) Amino acids. D) Sugar. Show Answer Correct Answer: D) Sugar. 6. What are the main functions of xylem in plants? A) Transport of glucose and oxygen. B) Transport of sucrose and amino acids. C) Transport of water and mineral ions, and support. D) Transport of proteins. Show Answer Correct Answer: C) Transport of water and mineral ions, and support. 7. What PART of the plant collects water? A) Flower. B) Leaves. C) Roots. D) Stem. Show Answer Correct Answer: C) Roots. 8. The movement of food in the phoelm is called ..... A) Osmosis. B) Vascular bundles. C) Diffusion. D) Translocation. Show Answer Correct Answer: D) Translocation. 9. Chlorophyll traps light energy and converts it to chemical energy during photosynthesis. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 10. The main function of the xylem in plants is (a) A) A. Transport of water and minerals. B) Transport of food. C) Storage of water. D) Photosynthesis. Show Answer Correct Answer: A) A. Transport of water and minerals. 11. What is the mutual attraction between water molecules called? A) Cohesion. B) Adhesion. C) Root Pressure. D) Transpiration Pull. Show Answer Correct Answer: A) Cohesion. 12. Adaptation to reduce transpiration A) Narrow leaves. B) More stomata. C) Broader leaves. D) Absence of cuticle. Show Answer Correct Answer: A) Narrow leaves. 13. On a dry, Sunny day, how does water vapour move through the stomata of a leaf? A) Out of the leaf by respiration. B) Into the leaf by respiration. C) Into the leaf by diffusion. D) Out of the leaf by diffusion. Show Answer Correct Answer: D) Out of the leaf by diffusion. 14. ..... carry blood at high pressure and ..... carry blood at low pressure. A) Capillaries; veins. B) Arteries; veins. C) Veins; arteries. D) Veins; capillaries. Show Answer Correct Answer: B) Arteries; veins. 15. The conducting system consists of A) Xylem and Xylem parenchyma. B) Phloem and Phloem parenchyma. C) Xylem and Phloem. D) None of the above. Show Answer Correct Answer: C) Xylem and Phloem. 16. Which of the following statements is true according to the mass (pressure) flow hypothesis? A) Sucrose is moved in the phloem against a concentration gradient. B) Water is actively transported from the intercellular spaces into the cell sap at the root end of the system. C) The loading of sugars into the phloem in the leaf is achieved by osmosis. D) A source is a site where sugars are utilized, while a sink is a site where sugars are produced. Show Answer Correct Answer: A) Sucrose is moved in the phloem against a concentration gradient. 17. What is the process in which plants make their food A) Blood vessels. B) Photosynthesis. C) All the above. D) None of the above. Show Answer Correct Answer: B) Photosynthesis. 18. Where does translocation occur in plants? A) Xylem. B) Leaves. C) Phloem. D) Roots. Show Answer Correct Answer: C) Phloem. 19. Which statement best describes the driving force creating a water potential gradient in leaves? A) Root pressure increases xylem solute concentration. B) Capillary action raises water potential of stomata. C) Photosynthesis raises water potential in mesophyll. D) Transpiration lowers water potential in leaf tissues. Show Answer Correct Answer: D) Transpiration lowers water potential in leaf tissues. 20. What happens first during translocation in the phloem? A) Water enters the sieve tubes by osmosis. B) Sucrose leaves the sieve tubes by active transport. C) Sucrose enters the sieve tubes by active transport. D) Water leaves the sieve tubes by osmosis. Show Answer Correct Answer: C) Sucrose enters the sieve tubes by active transport. 21. What is significance of transpiration? A) Creates suction force. B) Helps in distribution of water and nutrients. C) Cooling effect for plants. D) All of the above. Show Answer Correct Answer: D) All of the above. 22. Xylem tissues provide mechanical support because it has ..... A) Pits. B) Companion cells. C) Lignin thickening cell wall. D) Mitochondria. Show Answer Correct Answer: C) Lignin thickening cell wall. 23. Which of the following forms of soil-water is commonly absorbed by plants? A) Hygroscopic water. B) Capillary water. C) Gravitational water. D) Free water. Show Answer Correct Answer: B) Capillary water. 24. Identify the process that involves the absorption of water by the roots of a plant A) Endocytosis. B) Active transport. C) Osmosis. D) Diffusion. Show Answer Correct Answer: C) Osmosis. 25. In the phloem, nutrients flow. Which way does the blood nutrient flow within the phloem? A) Up to the leaves only (like a one-way street). B) From the roots up to the leaves (like a one-way street). C) From the apical meristem down to the roots (like a one-way street). D) Up to the leaves and down to the roots (like a two-way street). Show Answer Correct Answer: D) Up to the leaves and down to the roots (like a two-way street). 26. Which of the following is not an adaptive feature of companion cells? A) Presence of large amounts of lysosomes. B) Presence of plasmodesmata links. C) Presence of large amounts of mitochondria. D) Presence of large amounts of transport proteins. Show Answer Correct Answer: A) Presence of large amounts of lysosomes. 27. Water movement through cellulose cell wall without entering protoplast of root cells is called A) Symplast pathway. B) Apoplast pathway. C) Vacuolar pathway. D) Cellulose pathway. Show Answer Correct Answer: B) Apoplast pathway. 28. As urine is excreted, muscle contractions of the urinary bladder will cause the urine to pass into the A) Bowman's capsule. B) Urethra. C) Ureter. D) Glomerulus. Show Answer Correct Answer: B) Urethra. 29. Which part of the plant is primarily responsible for the uptake of water and minerals from the soil? A) Leaves. B) Roots. C) Stem. D) None of the above. Show Answer Correct Answer: B) Roots. 30. The scientific name of a white blood cell A) Erythrocyte. B) Leukocyte. C) Thrombocyte. D) Osteocyte. Show Answer Correct Answer: B) Leukocyte. 31. Which of the following sentence shows correct relation between xylem structure and function? A) Xylem transport water up and down so that every plant organ get enough water. B) Xylem consists of living cell so water transport can be faster. C) Xylem cell wall is lignified so that it will not easily collapse. D) Xylem located outside of the phloem so that water can enter it in shorter way. Show Answer Correct Answer: C) Xylem cell wall is lignified so that it will not easily collapse. 32. In which state does water diffuse out of the leaf? A) Aqueous solution. B) Solid. C) Gas. D) Liquid. Show Answer Correct Answer: C) Gas. 33. A plant cell attains turgidity due to A) Electrolysis. B) Endosmosis. C) Exosmosis. D) Plasmolysis. Show Answer Correct Answer: B) Endosmosis. 34. More water is lost from which part of the plant? A) Upper surface of leaf. B) Flowers. C) Stem. D) Lower surface of leaf. Show Answer Correct Answer: D) Lower surface of leaf. 35. The movement of molecules from their lower concentration to a higher concentration with the help of energy A) Osmosis. B) Diffusion. C) Brownian movement. D) Active transport. Show Answer Correct Answer: D) Active transport. 36. In a school garden, Abigail noticed that the leaves of the plants were crucial for their growth. What is the primary purpose of leaves in plants? A) Water storage. B) Seed production. C) Root anchoring. D) Photosynthesis. Show Answer Correct Answer: D) Photosynthesis. 37. The translocation of food takes place through A) Stomata. B) Phloem. C) Root hair. D) Xylem. Show Answer Correct Answer: B) Phloem. 38. Fill in the blank:The tendency of water to move upward through narrow tubes against gravity is called ..... action. A) Diffusion. B) Osmosis. C) Capillary. D) Adhesion. Show Answer Correct Answer: C) Capillary. 39. In a study of water movement in plants, the cut end of a leafy shoot is placed in a dilute solution of a dye. After a few hours, deposits of the dye accumulated in the leaves. The rate of movement of the dye up the stem is NOT increased by A) Availability of water. B) Humidity. C) Wind speed. D) Temperature. Show Answer Correct Answer: B) Humidity. 40. What is the process known as where water moves upward through the xylem at a fairly high rate? A) Transpiration Pull. B) Adhesion-Tension-Transpiration Pull Model. C) Root Pressure Theory. D) Capillary Action. Show Answer Correct Answer: A) Transpiration Pull. 41. Most active part of the root for salt uptake. A) The growing region of the root and the root hair zone. B) The root cap and the meristematic zone. C) The mature root zone and the vascular tissue. D) The root cortex and the endodermis. Show Answer Correct Answer: A) The growing region of the root and the root hair zone. 42. What can trigger the closure of stomata? A) Moderate temperature. B) Light intensity. C) Slightly increased carbon dioxide concentration. D) Extreme drought. Show Answer Correct Answer: D) Extreme drought. 43. Which of the following helps in the absorption of water amd mineral salts? A) Mycorrhiza. B) Anabaena. C) Nostoc. D) None of these. Show Answer Correct Answer: A) Mycorrhiza. 44. In the xylem, water flows. Which way does water flow within the xylem of the plant? A) Up to the leaves only (like a one-way street). B) From the roots up to the leaves (like a one-way street). C) From the apical meristem down to the roots (like a one-way street). D) Up to the leaves and down to the roots (like a two-way street). Show Answer Correct Answer: B) From the roots up to the leaves (like a one-way street). 45. What is the function of sieve tubes in phloem? A) Distributing water and minerals taken by the roots. B) Transporting manufactured food like sucrose and amino acids. C) Providing structural support to the plant. D) Storing glucose produced during photosynthesis. Show Answer Correct Answer: B) Transporting manufactured food like sucrose and amino acids. 46. Which feature would be most helpful to a plant in a desert? A) Small leaves. B) Large seeds. C) Small roots. D) Smelly flowers. Show Answer Correct Answer: A) Small leaves. 47. Which of the following is not capable of speeding up the rate of transpiration in plants? A) Increase in leaf temperature. B) Increase in wind speed. C) Increase in atmospheric carbondioxide. D) Increase in sunlight intensity. Show Answer Correct Answer: C) Increase in atmospheric carbondioxide. 48. Water travels through A) Phloem. B) Xylem. C) Veins. D) Tubes. Show Answer Correct Answer: B) Xylem. 49. How are the xylem and phloem arranged in leaves? A) Xylem above, phloem below. B) Xylem below, phloem above. C) Xylem and phloem side by side. D) None of the above. Show Answer Correct Answer: A) Xylem above, phloem below. 50. Facilitated diffusion-I. Is a very specific processII. Is a passive processIII. Helps the substances, hydrophilic in nature, to be transported across the membraneIV. Is faster than active process A) All are correct. B) I, IV are correct. C) I, II and IV are correct. D) All are correct except IV. Show Answer Correct Answer: D) All are correct except IV. 51. Numerous tiny ..... vessels within the roots of plants join up to form large vessels, collecting large amount of water and dissolved substances and transporting them towards the leaves, ..... , and ..... of plants A) Xylem, roots, stem. B) Xylem, fruits, flower. C) Xylem, fruits, stem. D) Phloem, fruit, flower. Show Answer Correct Answer: B) Xylem, fruits, flower. 52. What is the main force that drives the movement of water in the xylem? A) Osmosis. B) Capillary action. C) Gravity. D) Transpiration pull. Show Answer Correct Answer: D) Transpiration pull. 53. Which part of the leaf mainly carries out transpiration? A) Chloroplasts. B) Stomata. C) Midrib. D) Veins. Show Answer Correct Answer: B) Stomata. 54. The concentration of water is higher in the soil than in plant root cells. Water moves into root cells of a plant by ..... A) Active Transport. B) Facilitated Diffusion. C) Osmosis. D) Simple Diffusion. Show Answer Correct Answer: C) Osmosis. 55. Which theory of water transport states that hydrogen bonding allows water to maintain a continuous fluid column as water is pulled from roots to leaves A) Fusion. B) Evaporation. C) Pressure flow. D) Cohesion-tension. Show Answer Correct Answer: D) Cohesion-tension. 56. Phloem transports water and inorganic ions from the leaves to the roots. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: A) False. 57. Which explanation best connects leaf transpiration to upward xylem flow in the stem? A) Transpiration reduces leaf potential, pulling water upward. B) Transpiration increases stem pressure, stopping cohesion. C) Transpiration lowers soil potential, reversing gradient. D) Transpiration raises root potential, pushing sap downward. Show Answer Correct Answer: A) Transpiration reduces leaf potential, pulling water upward. 58. Explain the difference between xylem and phloem in plants. A) Xylem transports water and minerals, while phloem transports sugars and organic compounds. B) Xylem transports sugars and organic compounds, while phloem transports water and minerals. C) Xylem and phloem are the same and transport the same substances. D) Xylem and phloem both transport water and minerals. Show Answer Correct Answer: A) Xylem transports water and minerals, while phloem transports sugars and organic compounds. 59. Which chamber of the heart has the thickest muscle wall? A) Left ventricle. B) Right ventricle. C) Right atrium. D) Left atrium. Show Answer Correct Answer: A) Left ventricle. 60. Which type of xylem is formed during the early stages of development? A) Secondary xylem. B) Xylem parenchyma. C) Metaxylem. D) Protoxylem. Show Answer Correct Answer: D) Protoxylem. ← PreviousNext →Related QuizzesScience QuizzesClass 11 QuizzesClass 11 Biology Chapter 11 Transport In Plants Quiz 1Class 11 Biology Chapter 11 Transport In Plants Quiz 2Class 11 Biology Chapter 11 Transport In Plants Quiz 3Class 11 Biology Chapter 11 Transport In Plants Quiz 4Class 11 Biology Chapter 11 Transport In Plants Quiz 5Class 11 Biology Chapter 11 Transport In Plants Quiz 6Class 11 Biology Chapter 11 Transport In Plants Quiz 7Class 11 Biology Chapter 11 Transport In Plants Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books