This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 11 Transport In Plants – Quiz 13 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 11 Transport In Plants Quiz 13 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The leaf has a shiny, waxy cuticle around it to A) Increase the rate of photosynthesis. B) Attract more light. C) Control water loss. D) Stop carbon dioxide and oxygen gases escaping. Show Answer Correct Answer: C) Control water loss. 2. Plants with large leaves will transpire faster than plants with smaller leaves. Which of the following explains why? A) Plants with large leaves blow readily in the wind. B) Plants with large leaves have more stomata per unit area. C) Plant with large leaves carry more water. D) Plants with large leaves have more stomata in their lower surface. Show Answer Correct Answer: B) Plants with large leaves have more stomata per unit area. 3. Which of the following carries blood away from heart? A) Artery. B) Valve. C) Vein. D) Capillary. Show Answer Correct Answer: A) Artery. 4. What is water used for in the leaves of the plant? A) Drinking. B) Photosynthesis. C) Transport. D) Respiration. Show Answer Correct Answer: B) Photosynthesis. 5. When a plasmolysed cell is placed in water or hypotonic solution, what happens? A) Water potential of cell decreases. B) T.P. increases. C) T.P. of cell decreases. D) T.P. of cell becomes zero. Show Answer Correct Answer: D) T.P. of cell becomes zero. 6. Guard cells change shape and open the stomata as they become A) Flacid. B) Turgid. C) Larger. D) Smaller. Show Answer Correct Answer: B) Turgid. 7. The ions that important for producing chlorophylls? A) Phosphate ion. B) Magnesium ion. C) Potassium ion. D) Nitrate ion. Show Answer Correct Answer: B) Magnesium ion. 8. Factors affecting the rate of diffusion are-I. Gradient of concentrationII. Permeability of the membraneIII. TemperatureIV. PressureV. Size of diffusing material A) I, III and V are correct. B) I and V are correct. C) I, II, III, IV, V are correct. D) Only V is correct. Show Answer Correct Answer: C) I, II, III, IV, V are correct. 9. By which of the following processes do water molecules enter into the plant? A) Transpiration. B) Active transport. C) Diffusion. D) Osmosis. Show Answer Correct Answer: D) Osmosis. 10. True or false:A xylem vessel has many cross-walls A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 11. Mass or bulk flow of substance is called- A) Translocation. B) Diffusion. C) Facilitated diffusion. D) Active transport. Show Answer Correct Answer: A) Translocation. 12. In symplastic pathway water moves from cell to cell through A) Plasmodesmata. B) Cell walls. C) Stomata. D) None. Show Answer Correct Answer: A) Plasmodesmata. 13. All are correct except- A) Mycorrhizal fungi form a network around the young root and they penetrate the root cells. B) Mycorrhizae helps the plant to absorb water and minerals. C) Root provides sugar and nitrogenous organic compounds to the mycorrhizae. D) Pinus seed can germinate and establish without mycorrhizae. Show Answer Correct Answer: D) Pinus seed can germinate and establish without mycorrhizae. 14. How does a decrease in temperature 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: B) Decreases transpiration rate. 15. What is the function of the root cap? A) Protect the apical meristem. B) Undertake cell division. C) All the above. D) None of the above. Show Answer Correct Answer: A) Protect the apical meristem. 16. A watermelon has how much water? A) 100%. B) About 10 to 15%. C) More than 92%. D) 5 litres. Show Answer Correct Answer: C) More than 92%. 17. What is the name of the structure in plants that controls the opening and closing of stomata? A) Guard cells. B) Chloroplasts. C) Root hairs. D) Xylem cells. Show Answer Correct Answer: A) Guard cells. 18. Cell walls impregnated with water repellent suberin are found in the cells of- A) Endodermis. B) Pericycle. C) Root hairs. D) Trancheids. Show Answer Correct Answer: A) Endodermis. 19. A potato is an example of a modified ..... A) Modified root. B) Modified stem. C) Modified leaf. D) None of the above. Show Answer Correct Answer: B) Modified stem. 20. What does phloem transport? A) Minerals. B) Fruit. C) Water. D) Sugar. Show Answer Correct Answer: D) Sugar. 21. Which of the following choices is correct in relation to the translocation of organic material? A) Sugars are always translocated downwards or towards the base of the plant. B) The source is a site where sugars are produced, while sinks are sites where sugars are utilized. C) The sugar which is transported in all plants is sucrose. D) Sucrose travels in the phloem against a concentration gradient. Show Answer Correct Answer: B) The source is a site where sugars are produced, while sinks are sites where sugars are utilized. 22. What two forces are responsible for 90 percent of the upward flow of water through a plant? A) Capillary action and root pressure. B) Transpiration and cohesion. C) Gravity and osmosis. D) Diffusion and active transport. Show Answer Correct Answer: B) Transpiration and cohesion. 23. Water gets into root hair cells through the process of ..... A) Diffusion. B) Active transport. C) Osmosis. D) None of the above. Show Answer Correct Answer: C) Osmosis. 24. How does an increase in pollution 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: B) Decreases transpiration rate. 25. Water and dissolved minerals move up the xylem at the same speed. What concept does this contrast with? A) Osmosis across membranes. B) Active transport using ATP. C) Bulk flow driven by pressure. D) Facilitated diffusion down gradients. Show Answer Correct Answer: D) Facilitated diffusion down gradients. 26. Purple and red spots on leaves and delay in seed germination is caused by the deficiency of which nutrient? A) Nitrogen. B) Zinc. C) Phosphorus. D) Iron. Show Answer Correct Answer: C) Phosphorus. 27. This cell structure helps organisms maintain homeostasis by controlling what substances may enter or leave cells. A) Vacuole. B) Nucleus. C) Cell membrane. D) Cell wall. Show Answer Correct Answer: C) Cell membrane. 28. In which order does water pass through the cells of a plant, as the water travels from the roots toa leaf? A) Mesophyll cells $\rightarrow$ root hair $\rightarrow$ root cortex $\rightarrow$ xylem. B) Root hair $\rightarrow$ mesophyll cells $\rightarrow$ root cortex $\rightarrow$ xylem. C) Root cortex $\rightarrow$ root hair $\rightarrow$ xylem $\rightarrow$ mesophyll cells. D) Root hair $\rightarrow$ root cortex $\rightarrow$ xylem $\rightarrow$ mesophyll cells. Show Answer Correct Answer: D) Root hair $\rightarrow$ root cortex $\rightarrow$ xylem $\rightarrow$ mesophyll cells. 29. You need to measure the rate of transpiration in a leaf shoot. You should use ..... A) A ruler. B) A syringe. C) A balance. D) A potometer. Show Answer Correct Answer: D) A potometer. 30. What do the lungs provide the blood with? A) Hydrogen. B) Carbon dioxide. C) Blood. D) Oxygen. Show Answer Correct Answer: D) Oxygen. 31. Increasing light intensity, wind movement and temperature A) All decrease the rate of water uptake from a plant. B) Do not affect the rate of water uptake from a plant. C) All increase the rate of water uptake from a plant. D) None of the above. Show Answer Correct Answer: C) All increase the rate of water uptake from a plant. 32. The mineral whose defeciency causes poor growth with reduced rate of transpiration A) Phosphorus. B) Nitrogen. C) Potassium. D) Zinc. Show Answer Correct Answer: C) Potassium. 33. In a school garden, Priya noticed that the plants were growing well. She learned that root hair cells play a crucial role in helping plants thrive. What is the role of root hair cells? A) Store nutrients. B) Transport water to leaves. C) Absorb water and minerals from the soil. D) Provide structural support. Show Answer Correct Answer: C) Absorb water and minerals from the soil. 34. Which side of the heart pumps blood into the lungs? A) Right. B) Left. C) All the above. D) None of the above. Show Answer Correct Answer: A) Right. 35. Translocation occurs in phloem tubes. Aphids feed on the contents of phloem tubes. What type of food would be lacking in their diet? A) Water. B) Amino acid. C) Sucrose. D) Fat. Show Answer Correct Answer: D) Fat. 36. Which of these substances is/are transported by the xylem? A) Water only. B) Water and sucrose. C) Water and mineral salts. D) Mineral salts and sucrose. Show Answer Correct Answer: C) Water and mineral salts. 37. Transport proteins that simultaneously move two molecules across a membrane in the same direction are called- A) Antiport. B) Uniport. C) Diffusive ports. D) Symport. Show Answer Correct Answer: D) Symport. 38. ..... connects xylem vessels to phloem vessels, whereas ..... connects phloem vessels to companion cells A) Pits, plasmodesmata. B) Pits, sieve pores. C) Sieve pores, plasmodesmata. D) Sieve pores, pits. Show Answer Correct Answer: A) Pits, plasmodesmata. 39. Identify the benefit of sunken stomata A) Decrease transpiration. B) Increase cellular respiration. C) Decrease cellular respiration. D) Increase transpiration. Show Answer Correct Answer: A) Decrease transpiration. 40. If a plant's stomata close on a hot, dry day, how could this affect the plant's rate of photosynthesis? A) The rate of photosynthesis increases significantly. B) The plant produces more oxygen. C) The rate of photosynthesis remains unchanged. D) The rate of photosynthesis decreases. Show Answer Correct Answer: D) The rate of photosynthesis decreases. 41. What is Active Transport? A) Spreading out of particles from an area of higher concentration to an area of lower concentration. B) Movement of water molecules across a partially permeable membrane from a dilute solution to a more concentrated solution. C) Movement of particles from an area of lower concentration to an area of higher concentration. D) None of the above. Show Answer Correct Answer: C) Movement of particles from an area of lower concentration to an area of higher concentration. 42. Passive transport requires no A) Osmosis. B) Motion. C) Energy. D) Concentration gradients. Show Answer Correct Answer: C) Energy. 43. Which of the following is responsible for the cohesion of water molecules? A) Hydrogen bonds between the oxygen atoms of a water molecule and cellulose in a vessel cell. B) Covalent bonds between the hydrogen atoms of two adjacent water molecules. C) Hydrogen bonds between the oxygen atom of one water molecule and a hydrogen atom of another water molecule. D) Low concentrations of charged solutes in the fluid. Show Answer Correct Answer: C) Hydrogen bonds between the oxygen atom of one water molecule and a hydrogen atom of another water molecule. 44. What is the purpose of root hairs? A) To keep the roots warm. B) To open the stoma. C) To improve the plants structure. D) To increase surface area for water absorption. Show Answer Correct Answer: D) To increase surface area for water absorption. 45. Phloem is made from living cells called A) Sieve tube elements. B) Vascular bundles. C) Collenchyma. D) Paranchema. Show Answer Correct Answer: A) Sieve tube elements. 46. What structure prevents minerals in the root xylem from leaking back into the cortex and root hairs? A) Plasmodesmata. B) Casparian strip. C) Epidermis. D) Cortex. Show Answer Correct Answer: B) Casparian strip. 47. Evergreen trees adaptation A) Evergreen trees have broad, flat leaves that absorb maximum sunlight. B) Evergreen trees have small, compact needle-like leaves that help them survive in cold climates. C) Evergreen trees lose their leaves in winter to conserve energy. D) Evergreen trees grow in tropical climates with high humidity. Show Answer Correct Answer: B) Evergreen trees have small, compact needle-like leaves that help them survive in cold climates. 48. Which condition decreases transpiration rate? A) High wind speed. B) Bright sunlight. C) High temperature. D) High humidity. Show Answer Correct Answer: D) High humidity. 49. What is the primary driving force for water movement into the root cells from the soil? A) Osmosis. B) Active transport. C) Transpiration. D) Diffusion. Show Answer Correct Answer: A) Osmosis. 50. The lignified cell wall of xylem vessels is useful for its ..... function. A) Transport. B) Support. C) Translocation. D) Absorption. Show Answer Correct Answer: B) Support. 51. What is the movement of water from an area of high concentration to an area of low concentration called? A) Translocation. B) Active Transport. C) Osmosis. D) Transpiration. Show Answer Correct Answer: C) Osmosis. 52. What will be the direction of flow of water when a plant cell is placed in a hypotonic solution? A) No flow of water in any direction. B) Water will flow in both directions. C) Water will flow out of the cell. D) Water will flow into the cell. Show Answer Correct Answer: D) Water will flow into the cell. 53. Which of the following conditions would result in open 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: A) High levels of water in the plant. 54. Xylem cells are joined end-to-end with cross walls to form a long continuous tube for water to pass through. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 55. Both plants and humans have a transport system. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 56. Who am I?I am the largest (in size) blood component and have a nucleus. A) Hemoglobin. B) Platelet. C) Red blood cell. D) White blood cell. Show Answer Correct Answer: D) White blood cell. 57. Phloem sap is mainly made of A) Water and sucrose. B) Water and minerals. C) Oligosaccharides and hormones. D) None of these. Show Answer Correct Answer: A) Water and sucrose. 58. What are the two major properties of water on which ascent of sap depends? A) Adhesion and Cohesion. B) Root Pressure and Capillary Action. C) Transpiration Pull and Cohesion. D) Adhesion and Capillary Action. Show Answer Correct Answer: A) Adhesion and Cohesion. 59. Which of the following is the part of apoplast? A) Cell wall. B) Plasma membrane. C) Plasmodesmata. D) Cytoplasm. Show Answer Correct Answer: A) Cell wall. 60. Why might a plant organ be both a source and a sink at different times? A) The plant grows at night only. B) Depending on the season and function, it might store or produce sugars. C) It changes cell type. D) It switches from photosynthesis to respiration. Show Answer Correct Answer: B) Depending on the season and function, it might store or produce sugars. ← 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