This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 11 Transport In Plants – Quiz 14 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 11 Transport In Plants Quiz 14 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Where does the majority of the water evaporate from during transpiration? A) Outer surface of the epidermis. B) Inside guard cells. C) The surface of palisade mesophyll. D) The surface of spongy mesophyll. Show Answer Correct Answer: D) The surface of spongy mesophyll. 2. It is a hallow muscular organ that pump out blood A) Blood Vessels. B) Brain. C) Heart. D) Lungs. Show Answer Correct Answer: C) Heart. 3. Phloem transport substances in both upward and downward directions. True or false. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 4. What plant tissue transports food (glucose) throughout the plant? A) Leaves. B) Roots. C) Xylem. D) Phloem. Show Answer Correct Answer: D) Phloem. 5. Which of the following is true about phloem? A) Phloem is made of dead cells. B) Phloem transports sugars from the leaves to other parts of the plant. C) Phloem transports water and minerals from the roots to the leaves. D) Phloem only transports water. Show Answer Correct Answer: B) Phloem transports sugars from the leaves to other parts of the plant. 6. The main photosynthetic organs in plants are the roots. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 7. The food made by the leaves is transported to other parts by: A) Stomata. B) Roots. C) Phloem. D) Xylem. Show Answer Correct Answer: C) Phloem. 8. Where do endodermal cells release water and minerals for transport to the xylem? A) Into the cytoplasm. B) Into the cell walls. C) Into the soil. D) Into the phloem. Show Answer Correct Answer: B) Into the cell walls. 9. Transport of photosynthetic products from leaves to other parts of the plant via the phloem. A) Transpiration. B) Translocation. C) All the above. D) None of the above. Show Answer Correct Answer: B) Translocation. 10. Which is true about active transport? A) It moves material from high to low concentration. B) It moves substances down the concentration gradient. C) It does not require energy. D) It requires energy. Show Answer Correct Answer: D) It requires energy. 11. Increasing light intensity 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: C) Because stomata open wider. This allows water molecules to leave the leaf faster. 12. What is the form of sugar being move to companion cells? A) Sucrose. B) Maltose. C) Starch. D) Glucose. Show Answer Correct Answer: A) Sucrose. 13. What is the function of companion cells 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. 14. Name the innermost layer of the artery. A) Collagen fibre. B) Epithelium. C) Endothelium. D) Lumen. Show Answer Correct Answer: C) Endothelium. 15. The direction of water along with dissolved minerals in xylem is A) From shoot to roots. B) From roots to shoot. C) Multidirectional. D) Bidirectional. Show Answer Correct Answer: B) From roots to shoot. 16. Roots absorb water by the process of A) Pressure. B) Active transport. C) Osmosis. D) Diffusion. Show Answer Correct Answer: C) Osmosis. 17. When a plant cell is placed in a hypotonic solution, which of the following occurs? A) The cell takes up water and eventually bursts. B) The cell takes up water until the osmotic potential equals the pressure potential of the cell. C) Plasmolysis occurs. D) Nothing occurs. Show Answer Correct Answer: B) The cell takes up water until the osmotic potential equals the pressure potential of the cell. 18. Which of the following processes is/are involved in the loss of water from the leaves of plants?1. diffusion2. osmosis3. condensation4. evaporation A) 1 and 3. B) 1 only. C) 4 only. D) 1 and 4. Show Answer Correct Answer: D) 1 and 4. 19. What is the definition of Transportation A) The process in which substances absorbed or synthesized in one part of the plant remain stationary. B) The process if plants making its own food. C) The process in which substances absorbed or synthesized in one part of the plant are moved to other parts of the plant. D) None of the above. Show Answer Correct Answer: C) The process in which substances absorbed or synthesized in one part of the plant are moved to other parts of the plant. 20. Mineral ions cannot enter the roots through diffusion. They are absorbed through A) Passive transport. B) Active transport. C) Osmosis. D) None of the above. Show Answer Correct Answer: B) Active transport. 21. Two main vascular bundles are the xylem and phloem. Food substances travel in the ..... and water and salts are mainly conducted in the ..... A) Xylem; phloem. B) Phloem; xylem. C) Vascular bundles:vessels. D) Vessels; sieve tubes. Show Answer Correct Answer: B) Phloem; xylem. 22. Carrot-the food we eat is from what part of the plant A) Root. B) Flower. C) Stem. D) Leaves. Show Answer Correct Answer: A) Root. 23. How can you measure the rate of water transport in a celery stalk? A) Use a thermometer to check the temperature of the water. B) Use a colored dye solution and measure the distance traveled in a set time. C) Measure the weight of the celery stalk before and after soaking. D) Count the number of leaves on the celery stalk. Show Answer Correct Answer: B) Use a colored dye solution and measure the distance traveled in a set time. 24. How does hot and sunny weather affect transpiration pull? A) Increased transpiration pull because rate of water loss from the leaves is high. B) Decreased transpiration pull because stomata in leaves closes. C) Increased transpiration pull because water is used up for photosynthesis. D) Decreased transpiration pull because plant is photosynthesising. Show Answer Correct Answer: A) Increased transpiration pull because rate of water loss from the leaves is high. 25. The transpiration rate is less on a A) Dry day. B) Hot day. C) Windy day. D) Humid day. Show Answer Correct Answer: D) Humid day. 26. What is the primary force responsible for pulling water upward in tall plants? A) Active transport. B) Capillary action. C) Transpirational pull. D) Root pressure. Show Answer Correct Answer: C) Transpirational pull. 27. Why is water essential for the transport of nutrients in plants? A) It strengthens plant cell walls. B) It reduces the temperature of the plant. C) It dissolves nutrients for easy transport. D) It protects against pests. Show Answer Correct Answer: C) It dissolves nutrients for easy transport. 28. What type of blood do the arteries usually except for the Pulmonary artery carry? A) Oxygenated Blood. B) Deoxygenated Blood. C) All the above. D) None of the above. Show Answer Correct Answer: A) Oxygenated Blood. 29. Both the xylem and the phloem tissues can be found in the stem, roots and leaves of a plant. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 30. Suction in Transpiration A) It is a process that only happens at night when the temperature is cooler. B) It is the result of soil moisture being absorbed by the roots. C) It occurs when water evaporates from the leaves, creating a suction that pulls water up the stem. D) It is caused by the pressure of water in the roots. Show Answer Correct Answer: C) It occurs when water evaporates from the leaves, creating a suction that pulls water up the stem. 31. Why do root hairs cells have thin cell walls? A) So that the flow of water into root hair cells is fast. B) So that they can photosynthesise faster. C) So the cells can burst. D) None of the above. Show Answer Correct Answer: A) So that the flow of water into root hair cells is fast. 32. True or False:Xylem transports water and minerals in both upward and downward directions. A) True. B) Xylem transports only water. C) Xylem transports only minerals. D) False. Show Answer Correct Answer: D) False. 33. The ions that important for producing amino acids? A) Magnesium ion. B) Phosphate ion. C) Potassium ion. D) Nitrate ion. Show Answer Correct Answer: D) Nitrate ion. 34. What is the function of tracheids in xylem? 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: A) Distributing water and minerals taken by the roots. 35. How does an increase in wind speed affect the rate of transpiration? A) Increases transpiration rate. B) Decreases transpiration rate. C) All the above. D) None of the above. Show Answer Correct Answer: A) Increases transpiration rate. 36. What does xylem consist of? A) Tracheids, vessels, sieve tubes and companion cells. B) Tracheids, companion cells and xylem parenchyma. C) Sieve tubes, companion cells, xylem fibres and xylem parenchyma. D) Tracheids, vessels, xylem fibres and xylem parenchyma. Show Answer Correct Answer: D) Tracheids, vessels, xylem fibres and xylem parenchyma. 37. Movement of solvent molecules from its higher concentration to its lower concentration through a semi permeable membrane till equilibrium is achieved. A) Osmosis. B) Diffusion. C) Active transport. D) None of the above. Show Answer Correct Answer: A) Osmosis. 38. What is the process responsible for the suction force that moves water up the xylem vessels? A) Translocation. B) Transpiration. C) Transpiration pull. D) Evaporation. Show Answer Correct Answer: B) Transpiration. 39. Which of the following occupies the space between the cell wall and the shrunken protoplast in a plasmolysed cell? A) Water. B) Hypertonic solution. C) Hypotonic solution. D) Isotonic solution. Show Answer Correct Answer: B) Hypertonic solution. 40. Which adaptation is not for trapping humid air in xerophytes? A) Sunken stomata. B) Broad leaves. C) Thick cuticle. D) Hairy leaves. Show Answer Correct Answer: B) Broad leaves. 41. The only living tissue of xylem is A) Xylem vessels. B) Xylem parenchyma. C) Tracheids. D) None of the above. Show Answer Correct Answer: B) Xylem parenchyma. 42. A plant cell placed in pure water will- A) Expand until the osmotic potential or solute potential reaches that of water. B) Becomes more turgid until the pressure potential of cell reaches its osmotic potential. C) Become more turgid until the osmotic potential reaches that of pure water. D) Becomes less turgid until the osmotic potential reaches that of pure water. Show Answer Correct Answer: B) Becomes more turgid until the pressure potential of cell reaches its osmotic potential. 43. The main force responsible for the ascent of sap in tall trees is: A) Capillary action. B) Diffusion. C) Root pressure. D) Transpiration pull. Show Answer Correct Answer: D) Transpiration pull. 44. The roots of plants absorb water through passive transport processes. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 45. Water enters the roots through ..... A) Diffusion. B) Transpiration. C) Translocation. D) Osmosis. Show Answer Correct Answer: D) Osmosis. 46. The pathway for water that lies with the cell walls is- A) The symplastic pathway. B) The endodermal pathway. C) The casparian pathway. D) The apoplastic pathway. Show Answer Correct Answer: D) The apoplastic pathway. 47. What is the continuous process of water being drawn up through the xylem, lost out of the leaves, and then more being drawn up again called? A) Osmosis. B) Transpiration stream. C) Evaporation. D) Diffusion. Show Answer Correct Answer: B) Transpiration stream. 48. Which process are the xylem tubes part of? A) Translocation. B) Transpiration. C) All the above. D) None of the above. Show Answer Correct Answer: B) Transpiration. 49. Which statement best describes the primary role of the vascular system in plants? A) Generates ATP in roots. B) Stores starch in leaves. C) Controls transpiration stomata. D) Moves materials dissolved in water. Show Answer Correct Answer: D) Moves materials dissolved in water. 50. During transpiration, where is water lost from the plant? A) Xylem vessels. B) Stomata. C) Root hairs. D) Cortex. Show Answer Correct Answer: B) Stomata. 51. The process of Transpiration is observed from: A) Cuticle. B) Stomata. C) Lenticels. D) All of these. Show Answer Correct Answer: D) All of these. 52. What happens to the rate of transpiration when the humidity increases? A) It fluctuates. B) It remains constant. C) It increases. D) It decreases. Show Answer Correct Answer: D) It decreases. 53. What is translocation in plants? A) Movement of water in xylem. B) Movement of air in leaves. C) Movement of sucrose and amino acids in phloem. D) Uptake of minerals by roots. Show Answer Correct Answer: C) Movement of sucrose and amino acids in phloem. 54. Continuous water column is created in xylem during transpiration pull due to A) Cohesion and adhesion forces. B) Dead nature of cell wall. C) Less lignification of cell wall. D) High tensile strength and low capillarity. Show Answer Correct Answer: A) Cohesion and adhesion forces. 55. The water from the roots rises whenever the xylem vessels are empty the force which is pulling the water up is called A) Cappillary force. B) Caplary force. C) Capillary force. D) None of the above. Show Answer Correct Answer: C) Capillary force. 56. Which of the following is a correct explanation of the process of translocation in a plant? A) The movement of mineral ions through the xylem of a plant. B) The movement of sucrose and amino acids through the phloem from a source to a sink. C) The one-way movement of sucrose and amino acids through the phloem. D) The movement of sucrose and amino acids through the phloem from a sink to a source. Show Answer Correct Answer: B) The movement of sucrose and amino acids through the phloem from a source to a sink. 57. What regulates the opening and closing of stomata? A) Epidermis. B) Guard cells. C) Vascular bundles. D) Mesophyll cells. Show Answer Correct Answer: B) Guard cells. 58. In which order does water pass through these structures in a plant? A) A mesophyll $\rightarrow$ root hair $\rightarrow$ xylem. B) D root hair $\rightarrow$ xylem $\rightarrow$ mesophyll. C) C root hair $\rightarrow$ mesophyll $\rightarrow$ xylem. D) B mesophyll $\rightarrow$ xylem $\rightarrow$ root hair. Show Answer Correct Answer: B) D root hair $\rightarrow$ xylem $\rightarrow$ mesophyll. 59. In which direction does water move in the xylem? A) Upward from the roots to the leaves. B) Downward from the leaves to the roots. C) In all directions from the stem. D) From the leaves to the flowers. Show Answer Correct Answer: A) Upward from the roots to the leaves. 60. Xylem vessel elements differ from phloem sieve tube elements in what way? A) Possession of lignified walls. B) Possession of suberin walls. C) Presence of cross walls. D) Presence of sieve pores. Show Answer Correct Answer: A) Possession of lignified walls. ← 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