This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 11 Transport In Plants – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 11 Transport In Plants Quiz 5 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following transport mechanisms shows saturation of transport but does not show uphill transport? A) Simple diffusion. B) Active transport. C) Facilitated diffusion. D) Both simple and facilitated diffusion. Show Answer Correct Answer: C) Facilitated diffusion. 2. During diffusion A) Large or oddly shaped molecules move across a cell membrane. B) Water moves from high to low concentration. C) Substances (things) moves from high to low concentration. D) Water moves when energy is used. Show Answer Correct Answer: C) Substances (things) moves from high to low concentration. 3. Transport of organic and inorganic materials is- A) Multidirectional. B) First undirectional then bidirectional. C) Bidirectional. D) Unidirectional. Show Answer Correct Answer: A) Multidirectional. 4. Which of the following explains why having sunken stomata reduces the rate of transpiration? A) Less water molecules blown away gives a higher concentration gradient. B) Less water molecules blown away gives a lower concentration gradient. C) More water molecules blown away gives a lower concentration gradient. D) More water molecules blown away gives a higher concentration gradient. Show Answer Correct Answer: B) Less water molecules blown away gives a lower concentration gradient. 5. The continuous influx of water from the soil causes an upward force that develops in the roots. A) Capillarity. B) Osmosis. C) Transpiration pull. D) Root pressure. Show Answer Correct Answer: D) Root pressure. 6. How does water move out of plant leaves? A) Through stomata as water vapour. B) Through stomata as liquid water. C) Through xylem as water vapour. D) None of the above. Show Answer Correct Answer: A) Through stomata as water vapour. 7. In which of the following can lignin be found? A) Leaves. B) Phloem. C) Stalk. D) Xylem. Show Answer Correct Answer: D) Xylem. 8. What is the process by which water is lost through the stomata of a plant? A) Evaporation. B) Translocation. C) Respiration. D) Transpiration. Show Answer Correct Answer: D) Transpiration. 9. What is the correct pathway of water from the soil to the leaves? A) Root cortex $\rightarrow$ Root hairs $\rightarrow$ Xylem. B) Root hairs $\rightarrow$ Root cortex $\rightarrow$ Xylem $\rightarrow$ Mesophyll. C) Stomata $\rightarrow$ Xylem $\rightarrow$ Leaves. D) Xylem $\rightarrow$ Root hairs $\rightarrow$ Leaves. Show Answer Correct Answer: B) Root hairs $\rightarrow$ Root cortex $\rightarrow$ Xylem $\rightarrow$ Mesophyll. 10. Guard cells help in A) Transpiration. B) Guttation. C) Fighting against infection. D) Protection against grazing. Show Answer Correct Answer: A) Transpiration. 11. What process actively pumps minerals from the soil into the root xylem? A) Transpiration. B) Diffusion. C) Active transport. D) Osmosis. Show Answer Correct Answer: C) Active transport. 12. What happens to a plant when the amount of water lost from its leaves is greater than the amount of water available in the soil? A) It produces more leaves. B) It wilts. C) It becomes dormant. D) It grows taller. Show Answer Correct Answer: B) It wilts. 13. You are monitoring the diffusion of a coloured molecule across a membrane. Which of the following will result in the fastest rate of diffusion? A) An internal concentration of 5% and an external concentration of 60%. B) An internal concentration of 35% and an external conc. of 40%. C) An internal concentration of 60% and an external concentration of 5%. D) A and c are correct. Show Answer Correct Answer: D) A and c are correct. 14. Which cells have extra cellulose deposits for structural support? A) Parenchyma. B) Spongy mesophyll. C) Collenchyma. D) Palisade. Show Answer Correct Answer: C) Collenchyma. 15. Ascent of sap takes place through A) Phloem. B) Cortex. C) Xylem. D) Epidermis. Show Answer Correct Answer: C) Xylem. 16. How does root pressure contribute to the movement of water in plants? A) Root pressure pushes water up from the roots to the stems and leaves. B) Root pressure causes water to move sideways within the plant. C) Root pressure has no effect on the movement of water in plants. D) Root pressure pulls water down from the leaves to the roots. Show Answer Correct Answer: A) Root pressure pushes water up from the roots to the stems and leaves. 17. In an experiment, the water potential of the water in a soil, is found to be-40kPa, while that of pure water is 0kPa. This difference is due to the A) Presence of mineral ions in the soil water. B) Greater kinetic energy of the soil water molecules. C) Small size of the mineral ions in the soil water. D) Water potential of soil water being positive. Show Answer Correct Answer: A) Presence of mineral ions in the soil water. 18. Where does sugar transport begin? A) Roots. B) Leaves. C) Root hairs. D) Vascular bundles. Show Answer Correct Answer: B) Leaves. 19. In which tissue are ions forced to pass selective permeable membrane? A) Cortex. B) Epidermis. C) Endodermis. D) Vascular bundle. Show Answer Correct Answer: C) Endodermis. 20. Cacti stomata behavior A) Stomata are open during the day and closed at night to maximize photosynthesis. B) Stomata are closed during the day and open at night to minimize evaporation. C) Stomata remain open throughout the day to absorb more sunlight. D) Stomata are closed both day and night to conserve water. Show Answer Correct Answer: B) Stomata are closed during the day and open at night to minimize evaporation. 21. Which tissue also helps to support the plant? A) Phloem. B) Root. C) Vascular bundle. D) Xylem. Show Answer Correct Answer: D) Xylem. 22. High light intensity tends to increase transpiration rate because ..... A) Stomata open in bright conditions. B) Diffusion is faster in bright conditions. C) All the above. D) None of the above. Show Answer Correct Answer: A) Stomata open in bright conditions. 23. I. Water leaves through the stomata by diffusion into the atmosphere II. Water evaporates from the surface of the mesophyll cells III. Water travels from cell to cell down a water potential gradient in the mesophyll IV. Water passes from the stem xylem into the mesophyll cells. Which of the following describes the correct sequence by which water is lost by transpiration? A) II-I-IV-III. B) I-II-IV-III. C) IV-III-II-I. D) I-II-III-IV. Show Answer Correct Answer: C) IV-III-II-I. 24. Fill in the blank:The major force in water transport is provided by the evaporation of water from leaves during ..... A) Respiration. B) Germination. C) Photosynthesis. D) Transpiration. Show Answer Correct Answer: D) Transpiration. 25. Which tissues transports amino acids and sugars in plants? A) Root. B) Xylem. C) Vascular bundle. D) Phloem. Show Answer Correct Answer: D) Phloem. 26. This is the process in which plants sweat. A) Transportation. B) Explanation. C) Transpiration. D) Exportation. Show Answer Correct Answer: C) Transpiration. 27. The water potential of pure water is: A) Zero. B) Less than zero. C) More than zero but less than one. D) More than one. Show Answer Correct Answer: A) Zero. 28. Water enters the root-hairs by osmosis A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 29. Which of the following help(s) in supporting a terrestrial woody plant?I.Xylem tissueII.Turgor pressureIII.Phloem tissue A) I only. B) I and II only. C) II and III only. D) I, II and III. Show Answer Correct Answer: B) I and II only. 30. Why does water loss slow down if a plant is put into a plastic bag? A) The humidity increases. B) The temperature increases. C) The light intensity increases. D) None of the above. Show Answer Correct Answer: A) The humidity increases. 31. How does metal uptake by plants in dry soil get influenced? A) By the amount of water. B) By the type of soil. C) By the temperature. D) By the light exposure. Show Answer Correct Answer: B) By the type of soil. 32. The function of the companion cell in mature phloem tissue is that it A) Contains a nucleus needed for cell division of the sieve tube elements. B) Provides structural support for the sieve tubes. C) Moves sucrose against a concentration gradient into the xylem. D) Actively moves sucrose out of neighbouring photosynthesizing cells to sieve tubes. Show Answer Correct Answer: D) Actively moves sucrose out of neighbouring photosynthesizing cells to sieve tubes. 33. What is translocation? A) The transport of food in the phloem tissues. B) The transport of water in the xylem tissues. C) The transport of food in the xylem tissues. D) The transport of water in the phloem tissues. Show Answer Correct Answer: A) The transport of food in the phloem tissues. 34. ..... are generally moved by a mass or bulk flow system. A) Water and minerals. B) Water and organic molecule. C) Water, minerals and food. D) Only water. Show Answer Correct Answer: C) Water, minerals and food. 35. How is the column of water pulled up through the xylem? A) Capillary action only. B) Transpiration pull with cohesion between water molecules. C) Active transport. D) Root pressure only. Show Answer Correct Answer: B) Transpiration pull with cohesion between water molecules. 36. What is the direction of transport in xylem? A) Upwards only. B) Downwards only. C) Both upwards and downwards. D) Sideways. Show Answer Correct Answer: A) Upwards only. 37. Xylem vessel elements are strengthened by A) Melanin. B) Cellulose. C) Pericycle. D) Lignin. Show Answer Correct Answer: D) Lignin. 38. Which of the following criteria does not pertain to facilitated transport? A) Transport saturation. B) Uphill transport. C) High selectivity. D) Requirement of special membrane proteins. Show Answer Correct Answer: B) Uphill transport. 39. Why is it important for organic materials to flow both up and down the plant? A) To protect the roots from pests. B) To supply nutrients to growing and storage regions. C) To balance photosynthesis and respiration. D) To evenly distribute water. Show Answer Correct Answer: B) To supply nutrients to growing and storage regions. 40. The casparian strip prevents water and minerals from entering the stele through the- A) Symplast. B) Xylem vessel. C) Plasmodesmata. D) Apoplast. Show Answer Correct Answer: D) Apoplast. 41. Sucrose is transported from the stem to the leaf during translocation. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. 42. True or false?:companion cell does have a nucleus A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. 43. The green substance in plant that makes it possible for them to make food from sunlight, carbon dioxide, and water A) Chlorophyll. B) Lignin. C) Phloem. D) Xylem. Show Answer Correct Answer: A) Chlorophyll. 44. Translocation refers to the movement of water through a plant. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: A) False. 45. Humans cannot make their own food, what are they called? A) Producers. B) Autotrophs. C) Herbivores. D) Heterotrophs. Show Answer Correct Answer: D) Heterotrophs. 46. All events below occurs in sink tissue, except A) Water enters sieve elements from xylem. B) Phloem turgor pressure decrease. C) Higher(+ve) solute potential. D) Water potential increases. Show Answer Correct Answer: A) Water enters sieve elements from xylem. 47. The Casparian strip blocks the symplastic pathway of water movement in plants. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 48. What is the stomata in plants? A) The chloroplast. B) Tiny pores in the leaves. C) The green pigment. D) Large pores in the leaves. Show Answer Correct Answer: B) Tiny pores in the leaves. 49. What happens to the water potential in mesophyll cells near stomata during transpiration? A) It decreases. B) It becomes zero. C) It remains the same. D) It increases. Show Answer Correct Answer: A) It decreases. 50. Berikut ialah ciri-ciri X:Membenarkan pertukaran gas ke dalam dan luar daun semasa fotosintesis dan respirasi. Membebaskan wap air ke persekitaran semasa transpirasi.Apakah stuktur X? A) Stoma. B) Sel pengawal. C) Xilem. D) Floem. Show Answer Correct Answer: A) Stoma. 51. Which of the following is an adaptation of a xerophyte? A) Thin cuticle. B) Reduced roots. C) Hairy leaves. D) Many stomata. Show Answer Correct Answer: C) Hairy leaves. 52. Wall of xylem veseel is covered with A) Wax. B) Pit. C) Lignin. D) Stoma. Show Answer Correct Answer: C) Lignin. 53. Why is the lamina of a leaf usually thin and flat? A) Prevents damage of chlorophyll in cells by excess light. B) Speeds up the rate at which $CO_2$. C) Enables sunlight to reach more guard cells. D) Prevents leaf from being too heavy. Show Answer Correct Answer: B) Speeds up the rate at which $CO_2$. 54. Phloem tissue is adapted by having no nucleus and little cytoplasm so that ..... A) There is more room for the central channel. B) Liquids can flow from one cell to the next. C) So there is lots of energy. D) None of the above. Show Answer Correct Answer: A) There is more room for the central channel. 55. The phloem fibers are A) Dead sclerenchyma. B) Living sclerenchyma. C) All the above. D) None of the above. Show Answer Correct Answer: A) Dead sclerenchyma. 56. Which one gives the most valid and recent explanation for stomatal movement? A) Starch hydrolysis. B) Guard cell photosynthesis. C) Transpiration. D) Potassium influx and efflux. Show Answer Correct Answer: D) Potassium influx and efflux. 57. Which force causes water molecules to be drawn out of the xylem walls at the leaf? A) Gravity. B) Cohesion. C) Tension. D) Adhesion. Show Answer Correct Answer: D) Adhesion. 58. As various ions from the soil are actively transported into vascular tissues of root, water follows and increases the pressure inside the xylem. This positive pressure is called A) Mass pressure. B) Root pressure. C) Osmotic potential. D) None. Show Answer Correct Answer: B) Root pressure. 59. What type of cells absorb water from the soil? A) Palisade cells. B) Xylem vessels. C) Root hair cells. D) None of the above. Show Answer Correct Answer: C) Root hair cells. 60. For what chemical process do plants need water? A) Respiration. B) Photosynthesis. C) Combustion. D) None of the above. Show Answer Correct Answer: B) Photosynthesis. ← 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 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