This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 11 Transport In Plants – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 11 Transport In Plants Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is false about the phloem tubes? A) They do not contain cytoplasm. B) They contain companion cells. C) Their end walls have not been completely broken down. D) They transport sugars only. Show Answer Correct Answer: A) They do not contain cytoplasm. 2. Water movement in a plant typically follows which sequence along the gradient? A) Atmosphere to leaf to stem to root. B) Soil to root to stem to leaves. C) Leaves to stem to roots to soil. D) Stem to leaves to roots to soil. Show Answer Correct Answer: B) Soil to root to stem to leaves. 3. The phenomenon whereby liquids will spontaneously move up tubes that have a very small bore. A) Diffusion. B) Transpiration Pull. C) Root Pressure. D) Capillarity. Show Answer Correct Answer: D) Capillarity. 4. What role do stomata primarily play in transpiration? A) They store water in spongy mesophyll. B) They act as pores allowing vapor diffusion. C) They condense vapor back to liquid. D) They pump water into xylem actively. Show Answer Correct Answer: B) They act as pores allowing vapor diffusion. 5. Which cells are alive but lack organelles? A) Companion cells. B) Xylem cells. C) Tracheid cells. D) Sieve tube cells. Show Answer Correct Answer: D) Sieve tube cells. 6. Which organelle is present in large number in companion cells? A) Mitochondria. B) Vacuoles. C) Ribosomes. D) Chloroplasts. Show Answer Correct Answer: A) Mitochondria. 7. (a) is primarily transported through the xylem. A) Sugars. B) Amino acids. C) Oxygen. D) A. Water. Show Answer Correct Answer: D) A. Water. 8. The food synthesised in the plants is transported through phloem in the form of A) Sucrose. B) Glucose. C) Fats. D) Starch. Show Answer Correct Answer: A) Sucrose. 9. Which type of movement requires cellular energy? A) Active transport. B) Facilitated diffusion. C) Osmosis. D) Diffusion. Show Answer Correct Answer: A) Active transport. 10. Which feature of xylem vessels helps support the plant? A) Thin cell walls. B) Presence of cytoplasm. C) Thick walls with lignin. D) Large central vacuole. Show Answer Correct Answer: C) Thick walls with lignin. 11. The rate of diffusion is not dependent on which of the following factors A) Size of particles. B) Pressure. C) Light. D) Temperature. Show Answer Correct Answer: C) Light. 12. What is the importance of transpiration in plants? A) It causes wilting of the plant. B) It increases the amount of chlorophyll. C) It helps in cooling the plant and in water uptake. D) It causes excessive water loss. Show Answer Correct Answer: C) It helps in cooling the plant and in water uptake. 13. Roots absorb minerals through a process called A) Guttation. B) Activc transport. C) Active transport. D) Transpiration. Show Answer Correct Answer: C) Active transport. 14. Transpiration does not involve the movement of water molecule by molecule into the leaf from the xylem. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: A) False. 15. The absence of which of the following makes it impossible for xylem vessel elements to synthesise proteins? A) Nucleus. B) Enzymes. C) Smooth ER. D) Cross walls. Show Answer Correct Answer: A) Nucleus. 16. Which living component helps in the transport of food in phloem? A) Phloem fibres. B) Xylem vessels. C) Sclerenchyma. D) Companion cells. Show Answer Correct Answer: D) Companion cells. 17. Which environmental condition lowers the rate of transpiration? A) High humidity. B) Windy day. C) Abundant sunshine. D) High temperatures. Show Answer Correct Answer: A) High humidity. 18. Where are the proton pumps responsible for phloem loading located? A) On the membranes of root hair. B) On the membrane of companion cell. C) On the membranes of root cell. D) On the membrane of sieve tube. Show Answer Correct Answer: B) On the membrane of companion cell. 19. Which macro nutrient helps in opening and closing of stomata A) Iron (fe). B) Manganese (Mn). C) Zinc (Zn). D) None of these. Show Answer Correct Answer: D) None of these. 20. Name the following:Four components of xylem tissue A) Tracheidsvesslesxylem parenchyamaxylem fibers. B) Plants. C) Phloem. D) Sieve tubescompanion cellsploem parenchyamaploem fibers. Show Answer Correct Answer: A) Tracheidsvesslesxylem parenchyamaxylem fibers. 21. The osmotic expansion of a cell kept in water is chiefly regulated by: A) Mitochondria. B) Vacuoles. C) Plastids. D) Ribosomes. Show Answer Correct Answer: B) Vacuoles. 22. Which of the following is not a feature of active transport of solutes in plants? A) Occurs through membranes. B) Requires ATP. C) Non-selective. D) Occurs against concentration gradient. Show Answer Correct Answer: C) Non-selective. 23. As a tree begins transpiring in the morning, tension pressure occurs first in- A) Leaf. B) Branches. C) Root. D) All the regions of the tree. Show Answer Correct Answer: A) Leaf. 24. What is a description of transpiration? A) A exchange of gases between the leaf and the atmosphere. B) B loss of water vapour from the leaves and stems of a plant. C) C movement of water from the roots to the leaves. D) D movement of water through the cells of the leaf. Show Answer Correct Answer: B) B loss of water vapour from the leaves and stems of a plant. 25. Vascular tissue that transports water and minerals ions UPWARDS from a plant's roots is know as ..... A) Xylem. B) Stomata. C) Chlorophyll. D) Phloem. Show Answer Correct Answer: A) Xylem. 26. How are root hair cells adapted for water and mineral absorption? A) Have many chloroplasts. B) Have extensions that increase surface area. C) Have many air spaces. D) None of the above. Show Answer Correct Answer: B) Have extensions that increase surface area. 27. Which part of the plant is involved in pulling water upward from the roots? A) Root Hair. B) Transpiration. C) Stomata. D) Phloem. Show Answer Correct Answer: B) Transpiration. 28. What is the upward movement of water in very small tubes? A) Transpiration pull. B) Transpiration. C) Root pressure. D) Capillary action. Show Answer Correct Answer: D) Capillary action. 29. Which part of the aphid will reach into which structure in the plant? A) Stylet; xylem. B) Stylet; phloem. C) Tail piect; pith. D) Tail piece; phloem. Show Answer Correct Answer: B) Stylet; phloem. 30. The Casparian strip contains a waterproof band made of ..... that prevents further progress of water in the cell walls. A) Cellulose. B) Suberin. C) Lignin. D) Starch. Show Answer Correct Answer: B) Suberin. 31. Cells around the roots use active transport to pump ions into xylem vessels and lower the water potential in the vessels A) Transpiration pull. B) Capillary action. C) Transpiration. D) Root pressure. Show Answer Correct Answer: D) Root pressure. 32. What is the main component of the xylem that provides strength? A) Cellulose. B) Chlorophyll. C) Lignin. D) Starch. Show Answer Correct Answer: C) Lignin. 33. Where does the transpiration pull begin in a plant? A) In the roots. B) In the leaves. C) In the flowers. D) In the stem. Show Answer Correct Answer: B) In the leaves. 34. Which one(s) is / are correct about porins?I. They are proteinsII. They form huge pores in the outer membrane of plastids, mitochondria and some bacteriaIII. They allow molecules upto the size of small proteins to pass through A) All are correct. B) All are incorrect. C) I and III are correct. D) I and II are correct. Show Answer Correct Answer: A) All are correct. 35. Effect of faster flow in the transpiration stream on xylem sap. A) The xylem sap remains unchanged. B) The xylem sap becomes thicker. C) The faster the flow, the more dilute the xylem sap is. D) The xylem sap becomes more concentrated. Show Answer Correct Answer: C) The faster the flow, the more dilute the xylem sap is. 36. Root pressure is maximum when A) Transpiration is high and absorption is very low. B) Transpiration is very low and absorption is high. C) Transpiration is very high and absorption is also very high. D) Transpiration and absorption both are slow. Show Answer Correct Answer: B) Transpiration is very low and absorption is high. 37. What processes help the journey of water up through the plant? A) Adhesion. B) Cohesion. C) Root pressure. D) Transpiration. E) All of the above. Show Answer Correct Answer: E) All of the above. 38. During a hot summer day, Elijah noticed that the plants in his garden were losing water quickly. What happens to transpiration rate at higher temperatures? A) Remains the same. B) Fluctuates. C) Increases. D) Decreases. Show Answer Correct Answer: C) Increases. 39. The pressure flow model for phloem translocation states ..... A) That sink strength drives transport in the pholem. B) That transport in treachery elements is pressure dependent. C) The water potential gradient in the sieve elements drives transport. D) The pressure gradient between the sieve elements at the source and the sink drives phloem transport. Show Answer Correct Answer: D) The pressure gradient between the sieve elements at the source and the sink drives phloem transport. 40. Phloem conducts water upwards in a plant. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 41. What conclusions can be drawn from the results of the experiment? A) There is a direct causation between the tested variables. B) There is a significant correlation between the tested variables. C) The results were inconclusive and cannot be interpreted. D) The experiment showed no relationship between the variables. Show Answer Correct Answer: B) There is a significant correlation between the tested variables. 42. How does surface area affect the rate of diffusion? A) When the surface area is bigger the rate of diffusion of particles is slower. B) When the surface area is bigger the rate of diffusion of particles is faster. C) When the surface area is smaller the rate of diffusion of particles is faster. D) Surface area does not affect diffusion. Show Answer Correct Answer: B) When the surface area is bigger the rate of diffusion of particles is faster. 43. Name the main tissues responsible for transport in plants. A) Phloem and cortex. B) Xylem and phloem. C) Xylem and cambium. D) Pith and cortex. Show Answer Correct Answer: B) Xylem and phloem. 44. What is the plant vessel responsible for transporting sugar? A) Xylem. B) Phloem. C) All the above. D) None of the above. Show Answer Correct Answer: B) Phloem. 45. Which one(s) aids(s) stomatal movement- A) Heterogenous nature of cell wall. B) Unique shape of guard cell. C) Radial orientation of cellulosic microfibrils in the guard cell. D) All. Show Answer Correct Answer: D) All. 46. Water travels from root hair cells to the leaves.What is the passage of water between these structures? A) Cortex cells $\rightarrow$ xylem $\rightarrow$ mesophyll cells. B) Xylem $\rightarrow$ cortex cells $\rightarrow$ mesophyll cells. C) Xylem $\rightarrow$ mesophyll cells $\rightarrow$ cortex cells. D) Cortex cells $\rightarrow$ mesophyll cells $\rightarrow$ xylem. Show Answer Correct Answer: A) Cortex cells $\rightarrow$ xylem $\rightarrow$ mesophyll cells. 47. The process which brings about entry of water into seed coat when seeds are placed in water for germination is A) Imbibition. B) Osmosis. C) Diffusion. D) DPD. Show Answer Correct Answer: A) Imbibition. 48. What is the name of the part of the root that allows water and minerals enter? A) Xylem. B) Phloem. C) Epidermis. D) Root hairs. Show Answer Correct Answer: D) Root hairs. 49. What is the main driving force that moves water up through a plant? A) Osmosis. B) Cohesion and adhesion. C) Active transport. D) Diffusion. Show Answer Correct Answer: B) Cohesion and adhesion. 50. Cacti adaptation to hot climates A) Most cacti have large leaves to maximize photosynthesis. B) Photosynthesis occurs in the roots to absorb more water. C) Most cacti lack leaves; photosynthesis occurs in stems with small surface area to reduce evaporation. D) Cacti store water in their leaves to survive in hot climates. Show Answer Correct Answer: C) Most cacti lack leaves; photosynthesis occurs in stems with small surface area to reduce evaporation. 51. Which of the following is NOT a characteristic of cells found in the apical meristem? A) Undifferentiated cells. B) Lack vacoules. C) Thin cell walls. D) Large vacoules. Show Answer Correct Answer: D) Large vacoules. 52. Which of the following is a function of transpiration in plants? A) Food synthesis. B) Production of chlorophyll. C) Opening of stomata. D) Cooling of plant surface. Show Answer Correct Answer: D) Cooling of plant surface. 53. What is the final destination of water and minerals after they are transported across the cortex? A) Phloem. B) Root xylem. C) Epidermis. D) Root hair cells. Show Answer Correct Answer: B) Root xylem. 54. What is the function of root hairs? A) It is a place to store food. B) It has large surface area to absorb more water. C) All the above. D) None of the above. Show Answer Correct Answer: B) It has large surface area to absorb more water. 55. Transpirational pull is facilated by the cohesion-adhesion mechanism of water molecules. If water molecules sticks to other materials it is called: A) Cohesion. B) Adhesion. C) All the above. D) None of the above. Show Answer Correct Answer: B) Adhesion. 56. Explain how the absorption of water by roots helps photosynthesis to take place A) Roots transport water to the leaves. B) Roots have specialized cells to absorb water which is then transported to the leaves through the xylem for photosynthesis to take place. C) Roots have a large surface area to absorb light. D) Roots anchor the plant in the soil. Show Answer Correct Answer: B) Roots have specialized cells to absorb water which is then transported to the leaves through the xylem for photosynthesis to take place. 57. Which of the following has walls that are one cell thick and is a site for diffusion? A) Vein. B) Artery. C) Capillary. D) Aorta. Show Answer Correct Answer: C) Capillary. 58. What is the minimum number of cell membranes that a water molecule must move through in getting from soil into a xylem vessel- A) 1. B) 6. C) 0. D) 2. Show Answer Correct Answer: D) 2. 59. Xylem vessels ..... A) Contain no cytoplasm. B) Contain no nuclei. C) Contain no cytoplasm or nuclei. D) Contain cytoplasm and nuclei. Show Answer Correct Answer: C) Contain no cytoplasm or nuclei. 60. What is the effect of increasing light intensity in transpiration? A) It decreases transpiration rates. B) It increases transpiration rates. C) It doesn't impact the rate of transpiration. D) None of the above. Show Answer Correct Answer: B) It increases transpiration rates. Next →Related QuizzesScience QuizzesClass 11 QuizzesClass 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 8Class 11 Biology Chapter 11 Transport In Plants Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books