This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 11 Transport In Plants – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 11 Transport In Plants Quiz 10 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following protect the body against pathogenic microorganisms such as bacteria, protozoa, viruses and their secretions? A) Leucocytes. B) Thromboplastin. C) Erythrocytes. D) Platelets. Show Answer Correct Answer: A) Leucocytes. 2. The region of stem between two nodes is the A) Shoot system. B) Internode. C) Node. D) Lateral bud. Show Answer Correct Answer: B) Internode. 3. The movement of sugars in the phloem contributes to homeostasis in a plant by: A) Distributing energy to all parts of the plant. B) Absorbing water from the soil. C) Releasing oxygen into the air. D) Providing structural support. Show Answer Correct Answer: A) Distributing energy to all parts of the plant. 4. Cooling effect of excessive evaporation A) Causes the leaf to wilt due to excessive moisture loss. B) Reduces water loss, leading to higher temperatures in the leaf. C) Increases the temperature of the leaf, promoting faster photosynthesis. D) Helps cool the leaf by absorbing latent heat as water evaporates, preventing cytoplasm damage from high temperatures. Show Answer Correct Answer: D) Helps cool the leaf by absorbing latent heat as water evaporates, preventing cytoplasm damage from high temperatures. 5. Which apparatus is needed to measure the rates of transpiration? A) Potometer. B) Pipette. C) Bunsen burner. D) Plants. Show Answer Correct Answer: A) Potometer. 6. How does water get from the leaf to the atmosphere? A) It moves by osmosis into the air spaces and diffuses through the stomata. B) It diffuses into the air spaces and evaporates through the stomata. C) It evaporates into the air spaces and diffuses through the stomata. D) It moves by active transport into the air spaces and evaporates through the stomata. Show Answer Correct Answer: C) It evaporates into the air spaces and diffuses through the stomata. 7. When sugars are actively transported into a cell, what happens to T.P. inside that cell as a result- A) Decreases, because water exits & affect T.P. B) Increases, because water enters & affects T.P. C) Increases because sugar conc. directly affects T.P. D) No change; sugar conc. has no effect on T.P. Show Answer Correct Answer: B) Increases, because water enters & affects T.P. 8. Phloem is living due to the presence of companion cells. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 9. Lily is studying the functions of different plant tissues in her biology class. She learns that one type of tissue is responsible for transporting essential substances throughout the plant. What does phloem transport? A) Nutrients and waste. B) Water and minerals. C) Oxygen and carbon dioxide. D) Sucrose and amino acids. Show Answer Correct Answer: D) Sucrose and amino acids. 10. Active transport is important because it can move molecules- A) From their low concentration to a higher concentration. B) From their high concentration to a lower concentration. C) With less ATP than might otherwise be used to move molecules. D) By increasing their diffusion coefficient. Show Answer Correct Answer: A) From their low concentration to a higher concentration. 11. True or False:When Abigail waters her plants, the phloem transport in the plants always occurs in the same direction. A) True. B) Only in summer. C) False. D) Only in spring. Show Answer Correct Answer: C) False. 12. Water will move from its region of high chemical potential / concentration to its region of lower chemical potential until A) Equilibrium is reached / DPD of both regions becomes same. B) Water amount in both regions becomes equal. C) Solute amount in both regions become equal. D) Amount of both solvent and solutes in both regions become equal. Show Answer Correct Answer: A) Equilibrium is reached / DPD of both regions becomes same. 13. Osmosis occurs in A) Semi permeable membrane. B) Freely permeable membrane. C) Non of he above. D) Both. Show Answer Correct Answer: A) Semi permeable membrane. 14. Cells which transport assimilates in the plant are called ..... ? A) Sieve elements. B) Phloem elements. C) Inorganic. D) Key elements. Show Answer Correct Answer: A) Sieve elements. 15. Translocation may occur as the mass flow hypothesis. The pressure involved in this hypothesis originates from A) The root pressure. B) Transpiration in the leaves. C) Accumulation of minerals and water in leaves. D) The intake of water by sieve tubes in the leaves. Show Answer Correct Answer: D) The intake of water by sieve tubes in the leaves. 16. Movement of sugar from source to other parts of plant is assist by A) Diffusion. B) Active transport. C) Capillary action. D) Endosmosis. Show Answer Correct Answer: B) Active transport. 17. What drives the flow of water through the xylem? A) Passive transport by the endodermis. B) The evaporation of water from the leaves. C) Active transport by sieve-tube elements. D) The number of companion cells in the phloem. Show Answer Correct Answer: B) The evaporation of water from the leaves. 18. What is the role of cohesion in water movement in plants? A) Cohesion helps in the attraction between water molecules, aiding in the upward movement of water in the xylem. B) Cohesion prevents water from evaporating from the leaves, ensuring water retention. C) Cohesion allows water to be absorbed by the roots more efficiently. D) Cohesion is responsible for the color of the leaves during photosynthesis. Show Answer Correct Answer: A) Cohesion helps in the attraction between water molecules, aiding in the upward movement of water in the xylem. 19. Phloem is responsible A) For upward translocation of minerals to stem tip. B) For downward translocation of organic nutrients to root cell. C) For providing water to the neighbouring cells. D) For providing support to the plant part. Show Answer Correct Answer: B) For downward translocation of organic nutrients to root cell. 20. In spring season which part of the potato plant acts as a source? A) Tubers. B) Roots. C) Leaves. D) Stomata. Show Answer Correct Answer: A) Tubers. 21. What is the effect of light on the speed of photosynthesis? A) The speed of photosynthesis is determined by the number of bubbles of gas produced per minute. B) There is no relationship. C) If there is no light, photosynthesis occurs faster. D) If the amount of light is more, the speed of photosynthesis is high. Show Answer Correct Answer: D) If the amount of light is more, the speed of photosynthesis is high. 22. Which adaptation creates a waterproof barrier that limits evaporation from leaf surfaces in xerophytes? A) Thicker waxy cuticle on epidermis. B) Greater number of chloroplasts. C) Expanded intercellular air spaces. D) Elevated stomatal aperture size. Show Answer Correct Answer: A) Thicker waxy cuticle on epidermis. 23. What is the name for the structures that allow flow of material between phloem cells? A) Trachieds. B) Cellulose. C) Sieve cell. D) Sieve plate. Show Answer Correct Answer: D) Sieve plate. 24. Which cell has thickened cell wall and without protoplasm? A) Phloem cell. B) Guard cell. C) Root hair cell. D) Xylem cell. Show Answer Correct Answer: D) Xylem cell. 25. The parts of xylem tissues are called A) Tracheid (1). B) Vessels(2). C) None of the options (3). D) The option 1 and 2 (4). Show Answer Correct Answer: D) The option 1 and 2 (4). 26. The major forces that transport water in a plant are: A) Transpiration pull and root pressure. B) Photosynthesis and respiration. C) Diffusion and osmosis only. D) Capillary action and gravity. Show Answer Correct Answer: A) Transpiration pull and root pressure. 27. Xylem conducting cells are A) Living cells. B) Dead cells. C) Both. D) None of the options. Show Answer Correct Answer: B) Dead cells. 28. Which of the following statements is false about xylem vessels? A) They are made up of dead cells. B) They contain chloroplasts and nuclei. C) They are hydrophobic. D) Their walls are made of cellulose and lignin. Show Answer Correct Answer: B) They contain chloroplasts and nuclei. 29. Resistance to water flow in the root cortex is higher for- A) Apoplastic pathway. B) Symplastic pathway. C) Both have the same. D) None. Show Answer Correct Answer: B) Symplastic pathway. 30. This structure transports water and mineral ions A) Xylem. B) Phloem. C) All the above. D) None of the above. Show Answer Correct Answer: A) Xylem. 31. An animal cell placed in a hypertonic (salty) solution will A) Shrink. B) Swell. C) Stay the same. D) None of the above. Show Answer Correct Answer: A) Shrink. 32. Where is chlorophyll found in plants? A) Leaves. B) Stem. C) Flower. D) Root. Show Answer Correct Answer: A) Leaves. 33. How would you expect increasing the humidity to affect the rate of transpiration? A) Decrease it. B) No change. C) Can't predict. D) Increase it. Show Answer Correct Answer: A) Decrease it. 34. Water moves through xylem by active transport from the roots to the leaves. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 35. What is the function of lignin deposits in the walls of xylem vessels? A) Provide mechanical support to the xylem. B) Enable water to move more easily through the xylem. C) Make the xylem bitter so animals don't eat it. D) Enable mineral salts to move more easily through the xylem. Show Answer Correct Answer: A) Provide mechanical support to the xylem. 36. Casparian strip on endodermis cell are made of A) Suberin. B) Cellulose. C) Pectin. D) Lignin. Show Answer Correct Answer: A) Suberin. 37. Sink is any cell that ..... A) Give sugar. B) Excretes sugar. C) Stores sugar. D) Makes sugar. Show Answer Correct Answer: C) Stores sugar. 38. Which statement correctly identifies the substance and direction it is transported in the phloem? A) Water, only upwards. B) Water, up and down the plant. C) Glucose, only upwards. D) Glucose, up and down the plant. Show Answer Correct Answer: D) Glucose, up and down the plant. 39. What is being removed in a 'ringing' experiment? A) Cortex. B) Xylem. C) Phloem. D) Root hair. Show Answer Correct Answer: C) Phloem. 40. Sugars made in leaves are transported in: A) Xylem. B) Stomata. C) Chloroplast. D) Phloem. Show Answer Correct Answer: D) Phloem. 41. From which structures does water evaporate before leaving the leaf? A) Mesophyll cells. B) Xylem vessels. C) Chloroplasts. D) Guard cells. Show Answer Correct Answer: A) Mesophyll cells. 42. What is the direction of water movement when the water potential in the soil is higher than in the root hair cells? A) Soil to root hair cells. B) Root hair cells to soil. C) Xylem to soil. D) Cortex to root hair cells. Show Answer Correct Answer: A) Soil to root hair cells. 43. Within xylem vessel, adjacent vessel elements do not have ..... between them, and this will ensure ..... flow of materials within the xylem A) Division walls, differentiated. B) Cross walls, uninterrupted. C) Cross walls, interrupted. D) Sieve plates, uninterrupted. Show Answer Correct Answer: B) Cross walls, uninterrupted. 44. Assimilates or sugars, move from one part of the plant to another by A) Innundation. B) Evacuation. C) Transpiration. D) Translocation. Show Answer Correct Answer: D) Translocation. 45. Which of the following conditions would result in closed stomata? A) High levels of water in the plant. B) Low levels of water in the plant. C) All the above. D) None of the above. Show Answer Correct Answer: B) Low levels of water in the plant. 46. True or false:Sieve tube cells have no nucleus. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 47. What forms the channels and pumps in the phospholipid bilayer? A) Carbohydrates. B) Hydrophilic heads. C) Proteins. D) Lipids. Show Answer Correct Answer: C) Proteins. 48. Phloem conducting cells are A) Dead. B) Living. C) All the above. D) None of the above. Show Answer Correct Answer: B) Living. 49. Where is phloem tissue found in a stem? A) On the side facing the epidermis in the vascular bundle. B) One the side facing the pith in the vascular bundle. C) Distributed with some facing the epidermis and some facing the pith. D) Only in the middle of the vascular bundle. Show Answer Correct Answer: A) On the side facing the epidermis in the vascular bundle. 50. Which of the following describes the function of the endodermis? A) It controls the movement of water and ions to the xylem using a Casparian strip. B) It releases root pressure as water moves into the xylem by osmosis. C) It allows water molecules to cling to the surface by cohesion so that a continuous column is created. D) It forms a system of inter-connected plasmodesmata through which water and ions can move. Show Answer Correct Answer: A) It controls the movement of water and ions to the xylem using a Casparian strip. 51. How is water moved from the roots to the leaves in plants? A) By active transport. B) By diffusion. C) By transpiration pull and cohesion. D) By osmosis. Show Answer Correct Answer: C) By transpiration pull and cohesion. 52. What is the function of root hair cells? A) Photosynthesis. B) Water and mineral ion absorption. C) Transport of oxygen. D) Prevent water loss. Show Answer Correct Answer: B) Water and mineral ion absorption. 53. What hormone is responsible for the closing of stomata? A) Abscisic Acid. B) Auxin. C) Phytochrome. D) GA (Gibberellin). Show Answer Correct Answer: A) Abscisic Acid. 54. What environmental factor affects transpiration rate by increasing the kinetic energy of water molecules? A) Wind speed. B) Humidity. C) Temperature. D) Light intensity. Show Answer Correct Answer: C) Temperature. 55. What is the process by which particles flow in and out of a cell? A) Diffusion. B) Osmosis. C) All the above. D) None of the above. Show Answer Correct Answer: A) Diffusion. 56. Xylem vessels are composed of dead, empty hollow cells. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 57. What is the process called when sugars move from the leaves to other parts of the plant through phloem? A) Transpiration. B) Respiration. C) Photosynthesis. D) Translocation. Show Answer Correct Answer: D) Translocation. 58. A system of vessels that help return excess fluid to the bloodstream. A) Hepatic system. B) Integumentary system. C) Cardiovascular system. D) Lymphatic system. Show Answer Correct Answer: D) Lymphatic system. 59. One of the following is a macronutrient. Identify the macronutrient A) Nitrogen. B) Iron. C) Zinc. D) Manganese. Show Answer Correct Answer: A) Nitrogen. 60. Which of the following is not found in sieve tube elements? A) Ribosomes. B) Cytoplasm. C) Endoplasmic reticulum. D) Mitochondria. Show Answer Correct Answer: A) Ribosomes. ← 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