This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 11 Transport In Plants – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 11 Transport In Plants Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is NOT a source? A) Stem. B) Leaf. C) Roots. D) Cotyledon of germinating seed. Show Answer Correct Answer: C) Roots. 2. Which of the following cells are found in pairs on the leaf surface? A) Stomata. B) Subsidiary cells. C) Guard cells. D) Epidermal cells. Show Answer Correct Answer: C) Guard cells. 3. How is water absorbed into a plant? A) By active transport into root hairs. B) By diffusion through stomata. C) By osmosis into root hairs. D) None of the above. Show Answer Correct Answer: C) By osmosis into root hairs. 4. Guard cells control the opening and closing of the stoma, if the guard cell is turgid what happens to the stoma? A) It opens. B) It closes. C) All the above. D) None of the above. Show Answer Correct Answer: A) It opens. 5. In a drought, stomata close to conserve water. Which consequence is most immediate for the water potential gradient? A) Gradient remains unchanged despite stomatal closure. B) Gradient reverses causing water to move to soil. C) Gradient flattens because leaf potential rises. D) Gradient steepens from soil to leaf rapidly. Show Answer Correct Answer: C) Gradient flattens because leaf potential rises. 6. The last thing all water and solute molecules must pass through before they can enter the vascular system and move upward to leaves is- A) Root hair. B) Stoma. C) Epidermis. D) Endodermis. Show Answer Correct Answer: D) Endodermis. 7. Which tissue is responsible for transporting water and minerals in plants? A) Phloem. B) Xylem. C) Chloroplast. D) Root hairs. Show Answer Correct Answer: B) Xylem. 8. What is the ideal solution for plant cells? A) Hypotonic solution. B) Isotonic solution. C) All the above. D) None of the above. Show Answer Correct Answer: A) Hypotonic solution. 9. What property of water allows it to be pulled along the xylem when water evaporates from the leaves? A) Cohesion. B) Good solvent. C) Adhesion. D) High boiling point. Show Answer Correct Answer: A) Cohesion. 10. Which of the following is a passive transport process in plant cells? A) Osmosis. B) Exocytosis. C) Endocytosis. D) Active transport. Show Answer Correct Answer: A) Osmosis. 11. Osmosis is a specific form of- A) Active transport. B) Diffusion. C) Secondary active transport. D) Faciliated diffusion. Show Answer Correct Answer: B) Diffusion. 12. Transpiration keeps plant cells flaccid. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. 13. When is the rate of transpiration likely to be greatest? A) On a warm day with high wind speed. B) On a cool windy day. C) On a cool day with no air movements. D) On a warm day with no air movement. Show Answer Correct Answer: A) On a warm day with high wind speed. 14. Roots play insignificant role in absorption of water in A) Pea. B) Wheat. C) Sunflower. D) Pistia. Show Answer Correct Answer: D) Pistia. 15. What are the main organic compounds transported in the phloem? A) Minerals and water. B) Starch and cellulose. C) Sugars and amino acids. D) Oxygen and carbon dioxide. Show Answer Correct Answer: C) Sugars and amino acids. 16. Plants have a compact body structure similar to animals. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: A) False. 17. In apoplastic pathway, water moves through the A) Plasmodesmata. B) Cell wall. C) Mesophyll. D) Sieve tube elements. Show Answer Correct Answer: B) Cell wall. 18. In which part of the plant is metaxylem typically found? A) In the growing regions behind the root and shoot tips. B) In the mature parts of the plant. C) In the leaves. D) In the flowers. Show Answer Correct Answer: B) In the mature parts of the plant. 19. What factors influence source and sink locations? A) Season. B) Humidity. C) Sunlight. D) None of these. Show Answer Correct Answer: A) Season. 20. For shoots growing from tubers, food moves from the tubers to the shoots. Which of the following statements in correct? A) Sink to sink. B) Source to sink. C) Source to source. D) Sink to source. Show Answer Correct Answer: B) Source to sink. 21. Water and minerals are transported from a plant's roots to leaves through long, hollow tubes called ..... A) Stem. B) Root hair cells. C) Phloem. D) Xylem. Show Answer Correct Answer: D) Xylem. 22. Explain how root hairs are adapted for absorption of water. A) They are covered with thick cuticle. B) They are short and few in number. C) They have large surface area and thin walls. D) They are woody and lignified. Show Answer Correct Answer: C) They have large surface area and thin walls. 23. More root hairs will lead to A) Less transpiration. B) More transpiration. C) Closure of stomata. D) None of the above. Show Answer Correct Answer: B) More transpiration. 24. The tendency of water to move towards greater solute concentration is the example of- A) Osmolarity. B) Active transport. C) Diffusion. D) Passive transport. Show Answer Correct Answer: C) Diffusion. 25. A bottle filled with previously moistened Mustard seeds and water was screw capped tightly and kept in a corner. It blew up suddenly after about half an hour. The phenomenon involved is A) Diffusion. B) Imbibition. C) Osmosis. D) D.P.D. Show Answer Correct Answer: B) Imbibition. 26. More water in a plant causes the guard cells to be ..... and therefore the ..... the stomata. A) Flaccid, close. B) Flaccid, open. C) Turgid, close. D) Turgid, open. Show Answer Correct Answer: D) Turgid, open. 27. Rate of transpiration increases when conditions become ..... A) More humid, more windy. B) Less humid, less windy. C) Less humid, more windy. D) More humid, less windy. Show Answer Correct Answer: C) Less humid, more windy. 28. List the materials needed to investigate water transport in a celery stalk. A) Blue food coloring. B) Carrot sticks. C) Plastic bag. D) Celery stalk, colored water, clear container, knife, ruler, stopwatch. Show Answer Correct Answer: D) Celery stalk, colored water, clear container, knife, ruler, stopwatch. 29. Water channel consists of how many types of aquaporins A) 9. B) 8. C) 84. D) 1. Show Answer Correct Answer: B) 8. 30. Resistance to drought is reduced by excessive transpiration. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. 31. Elements which are transported throughout plants are called A) Sieve elements. B) Key elements. C) Phloem elements. D) Inorganic. Show Answer Correct Answer: A) Sieve elements. 32. Where is the xylem found in a root cross-section of a dicotyledonous plant? A) Outer cortex. B) Center of the root. C) Between the epidermis and cortex. D) In the epidermis. Show Answer Correct Answer: B) Center of the root. 33. Kelayuan tumbuhan berlaku apabila A) Air tidak mencukupi. B) Nutrien tidak mencukupi. C) Garam mineral tidak mencukupi. D) None of the above. Show Answer Correct Answer: A) Air tidak mencukupi. 34. ATP and protein are supplied to sieve tube elements by which other cell? A) Companion cell. B) Xylem vessel. C) Sieve tube element. D) Tracheid. Show Answer Correct Answer: A) Companion cell. 35. Passive Absorption of Mineral depends on:AIPMT Mains 2011 A) 1.Temperature. B) 2.Temperature and Metabolic inhibitor. C) 3.Metabolic inhibitor. D) 4.Humidity. Show Answer Correct Answer: A) 1.Temperature. 36. An incense stick lit in one corner of the room, spreads fragrance in the whole room. This is an example of A) Active transport. B) Facilitated Diffusion. C) Diffusion. D) None of the above. Show Answer Correct Answer: C) Diffusion. 37. Which statement correctly describes xylem and phloem distribution in dicot stems? A) Present exclusively within collenchyma. B) Confined only to the epidermis layer. C) Scattered individually across the pith. D) Arranged together in vascular bundles. Show Answer Correct Answer: D) Arranged together in vascular bundles. 38. Which factor increases the rate of transpiration? A) Low humidity. B) Low light intensity. C) Low temperature. D) None of the above. Show Answer Correct Answer: A) Low humidity. 39. Which compound is primarily transported by the phloem? A) Sugars (like sucrose). B) Minerals. C) Proteins. D) Water. Show Answer Correct Answer: A) Sugars (like sucrose). 40. Which force directly causes water molecules to stick to the xylem wall? A) Adhesion. B) Cohesion. C) Gravity. D) Tension. Show Answer Correct Answer: A) Adhesion. 41. The flow of water in the xylem travels in two directions up and down. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 42. Which term means "water-loving" ? A) Cohesion. B) Hydrophobic. C) Hydrophilic. D) Nonpolar. Show Answer Correct Answer: C) Hydrophilic. 43. Identify the tissue that has a purely mechanical function (strength and support). Its walls have usually become impregnated with lignin. A) Phloem. B) Sclerenchyma. C) Parenchyma. D) Epidermis. Show Answer Correct Answer: B) Sclerenchyma. 44. How are companion cells adapted to their function? A) They have many mitochondria to release energy for growth of the phloem. B) They have few mitochondria to reduce resistance to flow of substances in the phloem. C) They have few mitochondria as they receive energy released from sieve tube cells. D) They have many mitochondria to release energy for transport of food substances. Show Answer Correct Answer: D) They have many mitochondria to release energy for transport of food substances. 45. How do root hairs help plants absorb water and nutrients more efficiently? A) By protecting the roots. B) By storing water. C) By increasing the surface area. D) By producing food. Show Answer Correct Answer: C) By increasing the surface area. 46. Which of the following increases the rate of transpiration? A) Air around the leaf with high humidity. B) Air molecules around the leaf with less kinetic energy. C) An absence of light falling on the leaf. D) Water molecules in the leaf with more kinetic energy. Show Answer Correct Answer: D) Water molecules in the leaf with more kinetic energy. 47. Describe water transport in plants A) Water is absorbed by roots, travels through the plant, and evaporates from the leaf surface. B) Water is stored in the leaves and used during photosynthesis. C) Water is absorbed by leaves and transported to the roots. D) Water is absorbed by flowers and distributed to the fruits. Show Answer Correct Answer: A) Water is absorbed by roots, travels through the plant, and evaporates from the leaf surface. 48. The phloem consists of all EXCEPT: A) Sieve tubes. B) Phloem fibres. C) Companion cells. D) Tracheids. Show Answer Correct Answer: D) Tracheids. 49. In the phloem, what provides nutrients to help sieve tube cells to transport manufactured food? A) Companion cells. B) Mitochondria. C) Xylem cells. D) None of the above. Show Answer Correct Answer: A) Companion cells. 50. Phloem transports substances made in the plant, such as sugars and amino acids, from the roots 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. 51. Are phloem cells alive or dead when matured? A) Alive. B) Dead. C) All the above. D) None of the above. Show Answer Correct Answer: A) Alive. 52. Movement of water through the cytoplasm and plasmodesmata in the root, is known as the: A) Apoplastic pathway. B) Cellular pathway. C) Symplastic pathway. D) Vacuolar pathway. Show Answer Correct Answer: C) Symplastic pathway. 53. What is the name of the apparatus used to estimate the rate of transpiration? A) Potometer. B) Thermometer. C) Hydrometer. D) Barometer. Show Answer Correct Answer: A) Potometer. 54. What is transpiration and how does it contribute to the movement of water in plants? A) Transpiration helps to pull water up from the roots to the leaves through the xylem vessels. B) Transpiration is the process of water moving from the leaves to the roots through the phloem vessels. C) Transpiration has no effect on the movement of water in plants. D) Transpiration causes water to move sideways within the plant, rather than upwards. Show Answer Correct Answer: A) Transpiration helps to pull water up from the roots to the leaves through the xylem vessels. 55. The factor that does not affect transpiration is A) Wind. B) Sunlight. C) Humidity. D) Colour of the leaf. Show Answer Correct Answer: D) Colour of the leaf. 56. One of the methods by which water ascends xylem vessels is capillarity. This is facilitated by xylem vessels which A) Are narrow. B) Are lignified. C) Are dead when mature. D) Have pits in their walls. Show Answer Correct Answer: A) Are narrow. 57. What do we call a substance that dissolves in a liquid to make a solution? A) Solute. B) Solvent. C) Solution. D) None of the above. Show Answer Correct Answer: A) Solute. 58. How is facilitated diffusion of sucrose into a companion cell achieved? A) By active transport of H+ ions to create a proton gradient and co transport back into companion cells. B) By active transport of sucrose to create a diffusion gradient. C) By diffusion of H+ ions into the phloem taking sucrose with them. D) By osmosis of water to change the water potential. Show Answer Correct Answer: A) By active transport of H+ ions to create a proton gradient and co transport back into companion cells. 59. Shoots consists of ..... including ..... and buds, flowering stems and flower buds. A) Stems; leaves. B) Roots; leaves. C) Stems; roots. D) Flower; leaves. Show Answer Correct Answer: A) Stems; leaves. 60. Nitrate ions are transported by an active transport mechanism. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. ← PreviousNext →Related QuizzesScience QuizzesClass 11 QuizzesClass 11 Biology Chapter 11 Transport In Plants Quiz 1Class 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