This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 11 Transport In Plants – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 11 Transport In Plants Quiz 7 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is paired correctly: A) Xylem:vessels;phloem:sieve tubes. B) Xylem:sieve tubes;phloem:vessels. C) All the above. D) None of the above. Show Answer Correct Answer: A) Xylem:vessels;phloem:sieve tubes. 2. Imbibition causes- A) Increase in the volume of imbibant but no pressure development. B) Decrease in the volume of imbibant and pressure develops. C) No change in volume of imbibant but pressure develops. D) Volume of imbibant increases and pressure develops. Show Answer Correct Answer: D) Volume of imbibant increases and pressure develops. 3. Roots absorb only water from the soil. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 4. Water potential measure the tendency of water to- A) Move from one place to another. B) Evaporate. C) Adhere. D) Condense. Show Answer Correct Answer: A) Move from one place to another. 5. Cell fragments or small pieces of cells that are found in blood are called ..... A) Platelets. B) Erythrocytes. C) Plasma. D) Leukocytes. Show Answer Correct Answer: A) Platelets. 6. Which option best describes the spongy mesophyll? A) Single layer of closely packed cells with any minute openings called stomata. B) Layers of closely packed cells that contain numerous chloroplasts. C) Layer of irregularly shaped cells with numerous large intercellular air spaces. D) Contains the xylem and phloem. Show Answer Correct Answer: C) Layer of irregularly shaped cells with numerous large intercellular air spaces. 7. What blood vessel transports deoxygenated blood from the body to the heart? A) Vena Cava. B) Aorta. C) Pulmonary Vein. D) Pulmonary Artery. Show Answer Correct Answer: A) Vena Cava. 8. Xylem vessels are composed of solid cells with no end walls. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 9. Leaves with adaptations to arid conditions A) Leaves with thick waxy cuticles and rolled-up structures to retain moisture. B) Leaves with large surface areas to maximize photosynthesis. C) Leaves that are bright green to attract pollinators. D) Leaves that are thin and delicate to allow for quick water absorption. Show Answer Correct Answer: A) Leaves with thick waxy cuticles and rolled-up structures to retain moisture. 10. Why do unicellular organisms not require a transport system? A) They have tiny bodies thus very small body volumes. B) They have a large surface area to volume ratio. C) Most of their body is in contact with their surrounding. D) All of the above. Show Answer Correct Answer: D) All of the above. 11. The movement of molecules against a concentration gradient A) Active transport. B) Osmosis. C) Simple diffusion. D) Facilitated diffusion. Show Answer Correct Answer: A) Active transport. 12. A scientist is studying the effects of fertilizer on the rate of transpiration in tomato plants. Which of the following correctly describes the dependent variable for this experiment? A) Height of tomato plants. B) Amount of fertilizer. C) Time. D) Rate of transpiration. Show Answer Correct Answer: D) Rate of transpiration. 13. If you stand under a tree it is very hot. True or false A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 14. Why do plants need to open stomata?I. To get rid of excess CO$_{2}$II. To allow transpirationIII. To exchange gases with the environment A) I only. B) I and II only. C) II and III only. D) I, II and III. Show Answer Correct Answer: C) II and III only. 15. Which process initiates the tension that pulls water upward in xylem? A) Capillary action in phloem tubes. B) Active pumping by xylem vessels. C) Transpiration removing water from leaves. D) Root pressure pushing water upward. Show Answer Correct Answer: C) Transpiration removing water from leaves. 16. Which of the following vessels has thin muscle wall and a large lumen? A) Artery. B) Capillary. C) Aorta. D) Vein. Show Answer Correct Answer: D) Vein. 17. Which side of the heart has oxygenated blood? A) Top. B) Bottom. C) Left. D) Right. Show Answer Correct Answer: C) Left. 18. Root pressure is caused by A) Movement of water molecules upwards in xylem vessels through osmosis. B) Active loading of water molecules into xylem vessels by endordermis cells. C) Active loading of salts into xylem vessels by endodermis cells. D) Xylem vessels using energy to actively load water upwards. Show Answer Correct Answer: C) Active loading of salts into xylem vessels by endodermis cells. 19. Assertion:Osmosis is a special type of diffusion of water through a semi-permeable membrane.Reason:The net direction and rate of osmosis depends only on the pressure gradient. A) Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion. B) Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion. C) Assertion is true but Reason is false. D) Both Assertion and Reason are false. Show Answer Correct Answer: C) Assertion is true but Reason is false. 20. An example of an adaptation of desert plants to conserve water is (a) A) Large leaves. B) Presence of chlorophyll in the root. C) A. Thick cuticles and small stomata. D) Shallow root systems. Show Answer Correct Answer: C) A. Thick cuticles and small stomata. 21. The conduction is unidirectional in- A) Phloem. B) Xylem. C) Both. D) Non of the above. Show Answer Correct Answer: B) Xylem. 22. The form of sugar transported through phloem is A) Sucrose. B) Fructose. C) Ribose. D) Gliucose. Show Answer Correct Answer: A) Sucrose. 23. This is a substance that makes the cell wall very strong and impermeable. A) Starch. B) Lignin. C) Cellulose. D) Fibres. Show Answer Correct Answer: B) Lignin. 24. Which is the energy change during photosynthesis A) Light energy to chemical energy. B) Carbon dioxide to food. C) Solar energy to glucose. D) Sun to food. Show Answer Correct Answer: A) Light energy to chemical energy. 25. The Epidermis is a tissue found in the stem. Which is not a function of the epidermal layer? A) Absorption of water. B) Reduction of water loss. C) Protection of inner tissues. D) Prevent infection. Show Answer Correct Answer: A) Absorption of water. 26. Plant transports food made in the leaves to ..... A) Roots. B) Stem. C) Flowers. D) All of the above. Show Answer Correct Answer: D) All of the above. 27. Xylem transports organic compounds like sucrose from the leaves to other parts of the plant. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: A) False. 28. The upward conduction of water and minerals by A) Epidermis. B) Phloem. C) Xylem. D) Cambium. Show Answer Correct Answer: C) Xylem. 29. Assertion:The loss of water in its liquid phase from the leaves is called guttation.Reason:Guttation takes place at night only. A) Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion. B) Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion. C) Assertion is true but Reason is false. D) Both Assertion and Reason are false. Show Answer Correct Answer: C) Assertion is true but Reason is false. 30. The walls of the xylem vessels contains numerous pits which allow ..... movement from one xylem vessel to a neighbouring ..... vessel A) Horizontal, xylem. B) Lateral, phloem. C) Upwards, phloem. D) Lateral, zylem. Show Answer Correct Answer: B) Lateral, phloem. 31. Which component of blood is responsible for helping to stop bleeding? A) Plasma. B) Platelets. C) Red blood cells. D) White blood cells. Show Answer Correct Answer: B) Platelets. 32. If a cell is placed in a HYPOTONIC solution, water will move ..... of the cell, causing it to ..... A) Into, swell. B) Out of, shrivel. C) In and out of the cell, stay the same. D) None of the above. Show Answer Correct Answer: A) Into, swell. 33. Why do sieve tube cells have little protoplasm? A) To reduce resistance to the flow of substances in the phloem. B) To reduce energy required for transport of mineral salts. C) To increase the production of amino acids. D) None of the above. Show Answer Correct Answer: A) To reduce resistance to the flow of substances in the phloem. 34. Which two substances are transported in the phloem? A) Amino acids and protein. B) Amino acids and sucrose. C) Protein and starch. D) Starch and sucrose. Show Answer Correct Answer: B) Amino acids and sucrose. 35. Water potential gradient is A) The overall movement of solutes. B) The evaporation of water from the leaves. C) The overall movement of water. D) Pressure gradient minus water potential. Show Answer Correct Answer: C) The overall movement of water. 36. Which among the following helps in the absorption of water by roots? A) Active transport. B) Root pressure. C) Diffusion. D) All of the above. Show Answer Correct Answer: D) All of the above. 37. What causes water to move up xylem vessels in a plant stem? A) The root hair cells use energy to move water into the roots. B) Transpiration reduces the pressure at the top of thexylem vessels. C) The water moves up the xylem vessels by osmo. D) None of the above. Show Answer Correct Answer: B) Transpiration reduces the pressure at the top of thexylem vessels. 38. What is capillary action and how does it relate to water movement in plants? A) Capillary action is the movement of water through narrow spaces in plants, driven by cohesion and adhesion, facilitating water transport from roots to leaves. B) Capillary action is the process of water evaporating from leaves. C) Capillary action refers to the absorption of nutrients by plant roots. D) Capillary action is the movement of air through plant tissues. Show Answer Correct Answer: A) Capillary action is the movement of water through narrow spaces in plants, driven by cohesion and adhesion, facilitating water transport from roots to leaves. 39. Stomata are important in a leaf because they allow for: A) Store starch. B) Water absorption only. C) Gas exchange in photosynthesis and transpiration. D) Transport of food. Show Answer Correct Answer: C) Gas exchange in photosynthesis and transpiration. 40. Transpiration is the evaporative loss of water from ..... A) Roots. B) Leaves. C) Stem. D) Both Leaves and Stem. Show Answer Correct Answer: B) Leaves. 41. What is double circulation? A) Blood passes once through the heart in a complete circuit. B) Blood passes twice through the heart in one complete circulation. C) Blood moves directly from veins to arteries. D) Blood flows once through lungs and body before returning to the heart. Show Answer Correct Answer: B) Blood passes twice through the heart in one complete circulation. 42. Where are carbohydrates made in a green leaf? A) Cell vacuoles. B) Phloem. C) Xylem. D) Chloroplasts. Show Answer Correct Answer: D) Chloroplasts. 43. Which of the following will decrease the rate of transpiration? A) High temperatures. B) Low humidity. C) A still and calm day. D) An abundance of water. Show Answer Correct Answer: C) A still and calm day. 44. When making a biological drawing, which practice is recommended? A) Keep drawings smaller than a quarter page. B) Shade areas to show depth perception. C) Use clear continuous lines without shading. D) Use colored pens for vivid detail. Show Answer Correct Answer: C) Use clear continuous lines without shading. 45. Which features of a root hair cell are adaptations for increased rate of absorption?1-lack of waxy cuticle2-large surface area to volume ratio3-cell walls without lignin deposit4-low water potential A) 1, 3 and 4. B) 2, 3 and 4. C) 1, 2, 3 and 4. D) 2 and 4. Show Answer Correct Answer: D) 2 and 4. 46. What is transported in the phloem and what is the direction of transport? A) Starch, up and down. B) Starch, up only. C) Sucrose, down and up. D) Sucrose, down only. Show Answer Correct Answer: C) Sucrose, down and up. 47. What are parts of the plant that use or store sucrose or amino acids called? A) Sinks. B) Sources. C) Stomata. D) Vessels. Show Answer Correct Answer: A) Sinks. 48. Transport of water through the xylem is- A) Passive unless the soil is very dry. B) Passive requiring no energy expenditure by the plant. C) Active, requiring energy expenditure by the soil. D) Active requiring energy expenditure by plant. Show Answer Correct Answer: B) Passive requiring no energy expenditure by the plant. 49. Which equation is the photosynthesis equation? A) C$_{6}$H$_{12}$O$_{6 }$+ O$_{2}$ $\rightarrow$ CO$_{2 }$+ H$_{2}$O. B) O$_{2 }$+ CO$_{2}$ $\rightarrow$ $_{ }$H$_{2}$O + C$_{6}$H$_{12}$O$_{6}$. C) C$_{6}$H$_{12}$O$_{6 }$+ O$_{2 + }$CO$_{2 }$ $\rightarrow$ H$_{2}$O. D) CO$_{2 }$+ H$_{2}$O $\rightarrow$ C$_{6}$H$_{12}$O$_{6 }$+ O$_{2}$. Show Answer Correct Answer: D) CO$_{2 }$+ H$_{2}$O $\rightarrow$ C$_{6}$H$_{12}$O$_{6 }$+ O$_{2}$. 50. How do minerals enter into plant cells?I. Active transportII. Bulk flow (with water)III. Transport by Phloem A) I only. B) I and II only. C) I, II and III. D) II and III only. Show Answer Correct Answer: B) I and II only. 51. In plant 'transpiration pull' theory for ascent of sap was first proposed by: A) Dixon. B) Dixon and Jolly. C) J. C. Bose. D) Strasburger. Show Answer Correct Answer: B) Dixon and Jolly. 52. Part of the water absorbed from the soil is lost via transpiration, some is used for photosynthesis and some used for ..... ? A) Stored in leaves. B) Stored in fruits. C) Maintaining turgidity of cells. D) Stored in stem. Show Answer Correct Answer: C) Maintaining turgidity of cells. 53. The loss of water in the form of vapour from plant leaves is called: A) Respiration. B) Evaporation. C) Osmosis. D) Transpiration. Show Answer Correct Answer: D) Transpiration. 54. Cellulose in the cell walls of xylem, increases the ..... of water molecules to help resist the effect of gravity. A) Cohesion. B) Arrangement. C) Adhesion. D) Pressure. Show Answer Correct Answer: C) Adhesion. 55. Cells of the phloem are living A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 56. Why are xylem vessels efficient in transporting water? A) They have many cross walls. B) They are filled with cytoplasm. C) They are dead and form continuous tubes. D) They store starch. Show Answer Correct Answer: C) They are dead and form continuous tubes. 57. What are the specialised protein channels that help to transport water across the membrane in root hair cells? A) Proton pumps. B) Apoptosis channels. C) Aquaporins. D) Water channels. Show Answer Correct Answer: C) Aquaporins. 58. Which of the following processes utilises energy A) Active transport. B) Facilitated diffusion. C) Osmosis. D) None of the above. Show Answer Correct Answer: A) Active transport. 59. How does water travel up xylem vessels? A) By osmosis. B) By evaporation from cell surfaces. C) Flowing in a continuous column. D) None of the above. Show Answer Correct Answer: C) Flowing in a continuous column. 60. What is the process called when water moves from the roots to the leaves through xylem? A) Transpiration. B) Photosynthesis. C) Osmosis. D) Respiration. Show Answer Correct Answer: A) Transpiration. ← 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 8Class 11 Biology Chapter 11 Transport In Plants Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books