This quiz works best with JavaScript enabled. Home > Class 11 > 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 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which one gives the most valid and recent explanation for stomatal movement? A) Starch hydrolysis. B) Guard cell photosynthesis. C) Transpiration. D) Potassium influx and efflux. Show Answer Correct Answer: D) Potassium influx and efflux. 2. Which force causes water molecules to be drawn out of the xylem walls at the leaf? A) Cohesion. B) Adhesion. C) Tension. D) Gravity. Show Answer Correct Answer: B) Adhesion. 3. As various ions from the soil are actively transported into vascular tissues of root, water follows and increases the pressure inside the xylem. This positive pressure is called A) Mass pressure. B) Root pressure. C) Osmotic potential. D) None. Show Answer Correct Answer: B) Root pressure. 4. What is the role of root pressure in the movement of water in plants? A) It pushes xylem sap upward over long distances. B) It pushes xylem sap upward for only a few meters. C) It pulls xylem sap downward. D) It has no role in water movement. Show Answer Correct Answer: B) It pushes xylem sap upward for only a few meters. 5. What type of cells absorb water from the soil? A) Palisade cells. B) Xylem vessels. C) Root hair cells. D) None of the above. Show Answer Correct Answer: C) Root hair cells. 6. For what chemical process do plants need water? A) Respiration. B) Photosynthesis. C) Combustion. D) None of the above. Show Answer Correct Answer: B) Photosynthesis. 7. Xylem are made of living cells that are lignified A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 8. Fill in the blank:Capillary action causes water to move much higher in a narrow tube than in a wide tube. A) Capillary action. B) Diffusion. C) Evaporation. D) Condensation. Show Answer Correct Answer: A) Capillary action. 9. What is a 'sink' in a plant? A) Part that releases sugars. B) Part that absorbs sunlight. C) Part that uses or stores sucrose or amino acids. D) Part that loses water vapour. Show Answer Correct Answer: C) Part that uses or stores sucrose or amino acids. 10. Stomata have bean-shaped guard cells with a ..... outer wall, b ..... inner wall A) Thin b. thick. B) Thick b. thin. C) Flexible b. cellulose. D) Variable b. homogenous. Show Answer Correct Answer: A) Thin b. thick. 11. The rate of transpiration increases by an increase in the: A) Oxygen. B) Carbon dioxide. C) Soil Dryness. D) Temperature. Show Answer Correct Answer: D) Temperature. 12. What property of water molecules allows them to stick together and form a continuous column in the xylem? A) Adhesion. B) Cohesion. C) Surface tension. D) Osmosis. Show Answer Correct Answer: B) Cohesion. 13. Root pressure- A) Is not sufficient to rise water above ground level. B) Is negative in all except the tallest trees. C) Is the driving force for the mass flow of sugar. D) Can push water upto small heights in the stem. Show Answer Correct Answer: D) Can push water upto small heights in the stem. 14. What provides a large internal surface area for water vapor loss in leaves? A) Xylem vessels. B) Mesophyll cells. C) Stomata. D) Phloem tubes. Show Answer Correct Answer: B) Mesophyll cells. 15. Which two cells form phloem tissue? A) Sieve tube elements and companion cells. B) Phloem cells and tissue cells. C) Cross walls and lignin cells. D) Tube elements and sieve tissue cells. Show Answer Correct Answer: A) Sieve tube elements and companion cells. 16. Which of the following is used to transport water & mineral ions, while also providing structural support to the plant? A) Phloem. B) Mesophyll. C) Stem. D) Xylem. Show Answer Correct Answer: D) Xylem. 17. True or false:Cells in the xylem vessel have no protoplasm. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 18. Which feature directly reduces transpiration in xerophytes by decreasing exposed leaf surface area? A) Broad lamina leaves increase boundary layer. B) Leaves modified into spines reduce surface area. C) Large thin leaves enhance convective cooling. D) Expanded petioles increase photosynthetic area. Show Answer Correct Answer: B) Leaves modified into spines reduce surface area. 19. Which of the following is responsible for the absorption of mineral ions? A) Active transport. B) Osmosis. C) Diffusion. D) Transpiration. Show Answer Correct Answer: A) Active transport. 20. Other than transporting water, what is a function of xylem? A) Making food. B) Transporting food. C) Helping support the plant. D) Catching light. Show Answer Correct Answer: C) Helping support the plant. 21. What is the process by which manufactured food substances are transported un plants? A) Transpiration. B) Transpiration pull. C) Translocation. D) Active transport. Show Answer Correct Answer: C) Translocation. 22. What is the function of pits in pitted xylem vessels? A) To store water. B) To allow rapid movement of water and ions out of vessels. C) To conduct photosynthesis. D) To support the plant structure. Show Answer Correct Answer: B) To allow rapid movement of water and ions out of vessels. 23. Which of the following is an example of imbibition? A) Uptake water by root hair. B) Exchange of gases in stomata. C) Swelling of seed when put in soil. D) Opening of stomata. Show Answer Correct Answer: C) Swelling of seed when put in soil. 24. Structure of phloem consists all below, except? A) Sieve tube element. B) Tracheids. C) Companion cell. D) Sieve plate. Show Answer Correct Answer: B) Tracheids. 25. A scientist is studying the effects of fertilizer on the rate of transpiration in tomato plants. Which of the following is NOT an experimental control for this experiment? A) The amount of added fertilizer. B) The rate of transpiration. C) The type of fertilizer. D) The variety/species of tomato plant. Show Answer Correct Answer: B) The rate of transpiration. ← 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