This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 11 Transport In Plants – Quiz 49 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 11 Transport In Plants Quiz 49 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Companion cells are connected to sieve tube elements by A) Small plastids. B) Protein fibres. C) Plasmodesmata. D) Polymer molecules. Show Answer Correct Answer: C) Plasmodesmata. 2. Inner part of a trunk of older branch is known as A) Sapwood. B) Secondary xylem. C) Heartwood. D) None of the above. Show Answer Correct Answer: C) Heartwood. 3. Xylem is a long, hollow tube without any protoplasm to provide mechanical support and translocate manufactured food in the plant. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 4. Which specialized cells in the root provide a larger surface area for osmosis to occur? A) Xylem cells. B) Phloem cells. C) Root hair cells. D) Stomata cells. Show Answer Correct Answer: C) Root hair cells. 5. Transpiration facilitates- A) Transferring minerals to leaves. B) To maintain turgidity (hence shape and structure of the plant). C) Availability of water to photosynthesis. D) All. Show Answer Correct Answer: D) All. 6. The gas that escapes through stomata during transpiration A) Oxygen. B) Water vapour. C) Carbon dioxide. D) Hydrogen. Show Answer Correct Answer: B) Water vapour. 7. Which statement distinguishes pits from open pores in xylem? A) Pits retain cellulose wall without lignin. B) Pits are large openings lacking wall. C) Pits contain protein channels for ions. D) Pits are sealed by suberin lamellae. Show Answer Correct Answer: A) Pits retain cellulose wall without lignin. 8. What gas is TAKEN IN during photosynthesis? A) Argon. B) Nitrogen. C) Oxygen. D) Carbon dioxide. Show Answer Correct Answer: D) Carbon dioxide. 9. What percentage of plasma is made up of water? A) 100%. B) 90%. C) 45%. D) 55%. Show Answer Correct Answer: B) 90%. 10. A plant absorbs water and mineral ions through its roots. A) Absorbs water and mineral ions through its roots. B) Absorbs water and mineral ions through its leaves. C) Absorbs water and carbon dioxide through its roots. D) Absorbs water and sucrose through its roots. Show Answer Correct Answer: A) Absorbs water and mineral ions through its roots. 11. Which statement about the membrane channel is not true? A) They are proteins. B) Movement through them is along the concentration gradient. C) The are pores in the membrane. D) All ions pass through the same type of channel. Show Answer Correct Answer: D) All ions pass through the same type of channel. 12. Osmosis is A) The transport of water molecules from a higher concentration to an lower concentration is known as osmosis. B) The transport of molecules from a higher concentration to an lower concentration is known as osmosis. C) Both. D) None of the above. Show Answer Correct Answer: A) The transport of water molecules from a higher concentration to an lower concentration is known as osmosis. 13. The molecule that combines with oxygen to transport it A) Albumin. B) Globulin. C) Haemoglobin. D) Seratonin. Show Answer Correct Answer: C) Haemoglobin. 14. What is the hypothesis for the experiment on temperature and water transport? A) Higher temperatures increase the rate of water transport in plants. B) Lower temperatures increase the rate of water transport in plants. C) Higher temperatures decrease the rate of water transport in plants. D) Temperature has no effect on water transport in plants. Show Answer Correct Answer: A) Higher temperatures increase the rate of water transport in plants. 15. In the apoplastic pathway, water travels through the cytoplasm and plasmodesmata of the cells. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: A) False. 16. Which best describes the term "transpiration" ? A) The movement of water through the plant. B) The movement of water out of the plant stem. C) The evaporation of water from all parts of the plant. D) The evaporation of water from the aerial parts of the plant. Show Answer Correct Answer: D) The evaporation of water from the aerial parts of the plant. 17. What do dead xylem cells carry from roots to stems and leaves? A) Oxygen and Carbon Dioxide. B) Water and Minerals. C) Glucose and Starch. D) Proteins and Lipids. Show Answer Correct Answer: B) Water and Minerals. 18. Which of the following processes facilitates the loading of sugar into phloem vessels? A) Osmosis. B) Endocytosis. C) Active transport. D) Facilitated diffusion. Show Answer Correct Answer: C) Active transport. 19. Root pressure develops due to A) Low osmotic potential in soil. B) Passive absorption. C) Increase in transpiration. D) Active absorption. Show Answer Correct Answer: D) Active absorption. 20. Which one here is not the function of xylem vessels? A) Transporting water and minerals from roots to other parts of the plant. B) Providing structural support to the plant. C) Reducing the flow resistance of water and minerals. D) Helping in the storage of food. Show Answer Correct Answer: D) Helping in the storage of food. 21. Role of diffusion in salt uptake. A) Diffusion is the primary method for all salt uptake. B) Diffusion can play a role in the uptake of some individual salts. C) Diffusion has no effect on salt uptake. D) Diffusion only occurs in liquid solutions. Show Answer Correct Answer: B) Diffusion can play a role in the uptake of some individual salts. 22. The cells in the mesophyll layers are tightly packed and have few spaces around them. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. 23. What is the importance of mineral ions for plant growth? A) They are essential for various physiological functions, including enzyme activity, photosynthesis, and overall plant health. B) They provide structural support to the plant's cell walls. C) They are primarily used for energy storage in plants. D) They help in the reproduction of plants by attracting pollinators. Show Answer Correct Answer: A) They are essential for various physiological functions, including enzyme activity, photosynthesis, and overall plant health. 24. What process occurs when water moves from an area of high concentration to low concentration through a semi-permeable membrane in plants? A) Active transport. B) Diffusion. C) Osmosis. D) Transpiration. Show Answer Correct Answer: C) Osmosis. 25. A student is performing a chemical analysis of xylem sap. This student should not expect to find much of- A) Nitrogen. B) Sugar. C) P. D) Water. Show Answer Correct Answer: B) Sugar. ← PreviousNext →Related 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 8Class 11 Biology Chapter 11 Transport In Plants Quiz 9Class 11 Biology Chapter 11 Transport In Plants Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books