This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 11 Transport In Plants – Quiz 18 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 11 Transport In Plants Quiz 18 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following describes molecules moving down a concentration gradient? A) A bottle of soda in which bubbles of carbon dioxide are evenly distributed. B) Sugar settling at the bottom of a water glass. C) A cell with lots of water in it absorbing even more water. D) Warm air moving from a radiator to fill up a room. Show Answer Correct Answer: D) Warm air moving from a radiator to fill up a room. 2. An increase in which factor would decrease the rate of transpiration? A) Humidity. B) Wind. C) Temperature. D) Light. Show Answer Correct Answer: A) Humidity. 3. The column of water that is pulled upwards is known as the ..... A) Transpiration stream. B) Transpiration column. C) Diffusion stream. D) Osmosis stream. Show Answer Correct Answer: A) Transpiration stream. 4. What is the role of Hydrogen ATPase in mineral absorption? A) It facilitates photosynthesis. B) It releases H+ into the soil. C) It absorbs minerals from the soil. D) It transports water to the roots. Show Answer Correct Answer: B) It releases H+ into the soil. 5. Transpiration powers the movement of water A) Down a concentration gradient. B) Up a concentration gradient. C) Up & down concentration gradients. D) All of the answers. Show Answer Correct Answer: A) Down a concentration gradient. 6. What is the main function of the spongy mesophyll? A) Transport of water and food materials within the plant. B) Allow rapid diffusion of gases inside the leaf. C) Photosynthesis. D) Allow gaseous exchange in and out of the leaf. Show Answer Correct Answer: B) Allow rapid diffusion of gases inside the leaf. 7. If the xylem is damaged will water be able to flow to the leaves A) No. B) Yes. C) All the above. D) None of the above. Show Answer Correct Answer: A) No. 8. Terdapat lebih banyak stoma pada bahagian bawah daun daripada bahagian atas. A) BENAR. B) PALSU. C) All the above. D) None of the above. Show Answer Correct Answer: A) BENAR. 9. Go through the following statementsI. In active transport, pumps are proteins that use energy for transportation of molecules against the conc. gradient.II. Carrier protein is very specificIII. Transport rate reaches a maximum when all the active protein transporters are used and saturated A) All are correct. B) None is correct. C) I and III are correct. D) II and III are correct. Show Answer Correct Answer: A) All are correct. 10. The cell A has an osmotic potential of-20 bars and a pressure potential of +6 bars. What will be its water potential? A) -26 bars. B) -14 bars. C) +14 bars. D) -20 bars. Show Answer Correct Answer: B) -14 bars. 11. What safety precautions should be taken during the experiment? A) Ignore ventilation requirements. B) Wear regular clothing instead of PPE. C) Use open flames for heating. D) Wear PPE, ensure ventilation, keep flammables away from heat, and have emergency equipment. Show Answer Correct Answer: D) Wear PPE, ensure ventilation, keep flammables away from heat, and have emergency equipment. 12. Blood flows out of the left ventricle through which of the following blood vessels? A) Pulmonary vein. B) Aorta. C) Vena cava. D) Pulmonary artery. Show Answer Correct Answer: B) Aorta. 13. What is the difference between xylem and phloem transport? A) Xylem transports water, phloem transports food. B) Both transport food. C) Both transport water. D) Xylem is active, phloem is passive. Show Answer Correct Answer: A) Xylem transports water, phloem transports food. 14. The tensile strength of water / high capillarity is the gift of which properties of water- A) Cohesion. B) Adhesion. C) Surface tension. D) All. Show Answer Correct Answer: D) All. 15. What part of the plant functions as the site of photosynthesis, transpiration, and respiration? A) Flowers. B) Roots. C) Stems. D) Leaves. Show Answer Correct Answer: D) Leaves. 16. Which of the following is true for diffusion?I. It is a slow processII. It does not depend on a living systemIII. It is very important to plants since it is the only means for gaseous movement within the plant bodyIV. Diffusion is very obvious in gases and liquids, but diffusion in solid rather than of solid is more likely A) All are correct. B) Only II is correct. C) Only I and II are correct. D) None. Show Answer Correct Answer: A) All are correct. 17. Increasing wind speed increases the rate of water loss from a plant, A) Because water molecules move faster. B) Because the air moves water molecules away from the leaf faster, making it easier for more water molecules to move out of the leaf. C) Because stomata open wider. This allows water molecules to leave the leaf faster. D) None of the above. Show Answer Correct Answer: B) Because the air moves water molecules away from the leaf faster, making it easier for more water molecules to move out of the leaf. 18. On rainy days, the rate of transpiration is: A) Low. B) None of these. C) High. D) Depends on the intensity of rainfall. Show Answer Correct Answer: A) Low. 19. Which one is not true? A) The symplast is a meshwork consisting of (connected) living cells. B) The casparian strips prevent water from moving between endodermal cells. C) Water can move freely in the apoplast from cortical area to xylem of root. D) All. Show Answer Correct Answer: C) Water can move freely in the apoplast from cortical area to xylem of root. 20. How are sucrose and amino acids transported in a plant? A) Through the xylem. B) Through the phloem. C) Through the xylem and phloem. D) None of the above. Show Answer Correct Answer: B) Through the phloem. 21. Which factor affects the rate of transpiration by increasing the movement of water particles surrounding the leaf? A) Humidity. B) Wind speed. C) Light intensity. D) Temperature. Show Answer Correct Answer: B) Wind speed. 22. Suggest why most plants die quickly if their roots are cut off A) Roots are the source of light. B) Roots anchor the plant in the soil. C) Roots are red in color. D) Roots absorb water needed by the plant to photosynthesize and if cut, the plants cannot make its own food. Show Answer Correct Answer: D) Roots absorb water needed by the plant to photosynthesize and if cut, the plants cannot make its own food. 23. Which of the following structures is responsible for transporting sugars in plants? A) Root hairs. B) Phloem. C) Stomata. D) Xylem. Show Answer Correct Answer: B) Phloem. 24. Phloem tissue contains living cells with nuclei. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 25. What is the function of the cuticle in plants? A) To provide structural support to the plant. B) To transport nutrients throughout the plant. C) To reduce water loss from the plant surface. D) To absorb sunlight for photosynthesis. Show Answer Correct Answer: C) To reduce water loss from the plant surface. 26. Process by which plants capture sunlight to use its energy to transform carbon dioxide and water into glucose and oxygen A) Transpiration. B) Photosyntesis. C) Respiration. D) None of the above. Show Answer Correct Answer: B) Photosyntesis. 27. Water molecules pull each other up the xylem due to ..... A) Capillary action. B) Active transport. C) Osmosis. D) Root pressure. Show Answer Correct Answer: A) Capillary action. 28. True or false the sieve tubes are formed of circular cells A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 29. Phloem parenchyma is also known as A) Companion cells. B) Transfer cells. C) Pit cells. D) None of the above. Show Answer Correct Answer: B) Transfer cells. 30. What does xylem transport? A) Water and minerals. B) Water only. C) Sugar. D) Food. Show Answer Correct Answer: A) Water and minerals. 31. What is the significance of transpiration in plants? A) Transpiration has no significance in plants. B) Transpiration helps in the absorption of water and nutrients from the soil, cools the plant, and helps in the transport of water and minerals throughout the plant. C) Transpiration only helps in the transport of water and minerals. D) Transpiration causes the plant to overheat and die. Show Answer Correct Answer: B) Transpiration helps in the absorption of water and nutrients from the soil, cools the plant, and helps in the transport of water and minerals throughout the plant. 32. If the rate of transpiration exceeds the rate of water uptake, the plant will become more turgid. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: A) False. 33. What is the process by which water vapor is lost from plants to the atmosphere? A) Root pressure. B) Transpiration pull. C) Stomatal opening. D) Gravity. Show Answer Correct Answer: C) Stomatal opening. 34. When transpiration rates increase, what will happen to the cohesion tension in the xylem? A) Decreases. B) Increases. C) Stays the same. D) None of the above. Show Answer Correct Answer: B) Increases. 35. What is the best words to describe sugar source and sugar sink A) Both are plants organ and act as storage. B) Sugar sink can be either roots, fruit or mature leaves and sugar source is shoots. C) Sugar source act as site for sugar production and sugar sink will store sugar. D) Companion tube carry food from a sugar source to a sugar sink. Show Answer Correct Answer: C) Sugar source act as site for sugar production and sugar sink will store sugar. 36. What is the name given to the openings in a leaf? A) Waxy Cuticle. B) Stomata. C) Guard Cells. D) Epidermis. Show Answer Correct Answer: B) Stomata. 37. Which part of the plant is responsible for transporting water and nutrients upward? A) Xylem. B) Stomata. C) Phloem. D) Chloroplasts. Show Answer Correct Answer: A) Xylem. 38. Some liquid is collected from the xylem in the stem of a plant.What is present in the liquid? A) Inorganic ions. B) Cellulose. C) Starch. D) Sugar. Show Answer Correct Answer: A) Inorganic ions. 39. When a cell is fully turgid, which of the following is likely to be zero? A) Osmotic pressure. B) Turgor pressure. C) Water potential. D) Wall pressure. Show Answer Correct Answer: C) Water potential. 40. Water is carried from roots up the plant to leaves in the ..... A) Xylem vessels. B) Phloem tissue. C) Cell walls. D) None of the above. Show Answer Correct Answer: A) Xylem vessels. 41. Which blood vessels take blood TO the heart? A) Veins. B) Arteries. C) Capillaries. D) None of the above. Show Answer Correct Answer: A) Veins. 42. To develop root pressure, energy is used to- A) Condense water in the xylem. B) Evaporate water in the leaves. C) Actively transport minerals into root cells. D) Create suction in the xylem. Show Answer Correct Answer: C) Actively transport minerals into root cells. 43. The heart is capable of contracting and relaxing rhythmically without fatigue due to special muscles called ..... A) Skeletal muscles. B) Cardiac muscles. C) Myogenic muscles. D) Smooth muscles. Show Answer Correct Answer: B) Cardiac muscles. 44. Which of the following causes the stomata to open? A) A decrease in the turgor pressure in guard cells. B) Accumulation of water in guard cells by active transport. C) An influx of K+ into guard cells followed by water by osmosis. D) An increase in carbon dioxide in the air spaces in the leaves. Show Answer Correct Answer: C) An influx of K+ into guard cells followed by water by osmosis. 45. All of the following are forces involved in the process of water transport in plants EXCEPT ..... A) Transpiration pull. B) Active transport. C) Osmosis. D) Capillary action. Show Answer Correct Answer: B) Active transport. 46. When water is absorbed by a blotting paper or by a cotton bud, which property is used? A) No property. B) Capillarity. C) Absorption. D) None of the above. Show Answer Correct Answer: B) Capillarity. 47. Where does sugar is produced in plants? A) Stele. B) Roots. C) Vascular bundles. D) Root hairs. E) Leaves. Show Answer Correct Answer: E) Leaves. 48. Assertion (A):If the cell membrane is semi-permeable, we can call the cell wall 'freely permeable.Reason (R):The cell wall allows entry and exit of all materials through it.Which of the following statements satisfies the above statements of A and R? 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 is true, but R is false. D) A is false, but R is true. Show Answer Correct Answer: A) Both A and R are true, and R is the correct explanation of A. 49. The living cells of vascular bundle are killed by a poison.How will this treatment affect the transport between the roots and leaves? A) Transport occurs in both xylem and phloem. B) Transport does not occur in xylem but in phloem. C) Transport does not occur in phloem but in xylem. D) Transport does not occur in both xylem and phloem. Show Answer Correct Answer: C) Transport does not occur in phloem but in xylem. 50. The nutrient which is a constituent of cell membrane A) Manganese. B) Nitrogen. C) Phosphorus. D) Potassium. Show Answer Correct Answer: C) Phosphorus. 51. A carrot is an example of a modified ..... A) Stem. B) Root. C) Flower. D) None of the above. Show Answer Correct Answer: B) Root. 52. What is the movement of sugars through a plant called? A) Translation. B) Translocation. C) Transcription. D) None of the above. Show Answer Correct Answer: B) Translocation. 53. Which tool combination is used to calibrate microscope measurements so cells and tissues are drawn to correct proportions? A) Reticle and petri dish. B) Cover slip and immersion oil. C) Objective lens and coarse focus. D) Eyepiece graticule and stage micrometer. Show Answer Correct Answer: D) Eyepiece graticule and stage micrometer. 54. The transport of sucrose (a sugar made by plants after photosynthesis) around the plant in phloem is called translocation. A) In phloem is called transpiration. B) In xylem is called translocation. C) In xylem is called transpiration. D) In phloem is called translocation. Show Answer Correct Answer: B) In xylem is called translocation. 55. Root hair cells have a A) Small surface area. This helps them absorb water and mineral ions from the soil more quickly. B) Large surface area. This helps them absorb water and mineral ions from the soil more quickly. C) Large surface area. This helps them absorb water and mineral ions from the soil more slowly. D) Small surface area. This helps them absorb water and mineral ions from the soil more slowly. Show Answer Correct Answer: B) Large surface area. This helps them absorb water and mineral ions from the soil more quickly. 56. ..... is loss of water in Plants A) Evaporation. B) Precipitaion. C) Condensation. D) Transpiration. Show Answer Correct Answer: D) Transpiration. 57. In which part of the plant does the movement of substances occur in one direction? A) Phloem. B) Root hairs. C) Stomata. D) Xylem. Show Answer Correct Answer: D) Xylem. 58. Which of the following drive the transportation of water from stem to leaf?i) Root Pressureii) Capillary actioniii) Concentration of soil solutioniv) Transpirational pull A) I and ii. B) I and iii. C) Ii and iv. D) Iii and iv. Show Answer Correct Answer: C) Ii and iv. 59. Water moves into a root hair by ..... A) Diffusion and active transport. B) Active transport. C) Osmosis. D) Diffusion. Show Answer Correct Answer: C) Osmosis. 60. Phloem tissue contains cells called sieve tubes. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. ← 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