This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 11 Transport In Plants – Quiz 22 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 11 Transport In Plants Quiz 22 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What happens to the phloem sap movement at low temperatures? A) It speeds up. B) It reverses direction. C) It remains unaffected. D) It slows down or stops. Show Answer Correct Answer: D) It slows down or stops. 2. Which of the following is a xerophytic adaptation? A) Thin cuticle. B) Stomata only open during the day. C) Large leaves. D) Stomata are sunken in pits. Show Answer Correct Answer: D) Stomata are sunken in pits. 3. What is calculated using a potometer? A) Rate of perspiration. B) Rate of respiration. C) Rate of transpiration. D) Rate of absorption. Show Answer Correct Answer: C) Rate of transpiration. 4. What is the theory that talks about root pressure in plants called? A) Root Pressure Theory. B) Transpiration Pull Theory. C) Capillary Action Theory. D) Adhesion Theory. Show Answer Correct Answer: A) Root Pressure Theory. 5. The total surface area of xylem vessels within the ..... and ..... is greater than that in the ..... A) Leaves, root, stem. B) Root, stem, leaves. C) Stem, root, leaves. D) Leaves, stem, roots. Show Answer Correct Answer: A) Leaves, root, stem. 6. Elijah is conducting an experiment in his school garden. He wants to understand how plants transport essential nutrients. What is the function of xylem in plants? A) Transport of water and mineral ions. B) Store nutrients. C) Transport of sucrose and amino acids. D) Provide structural support to leaves. Show Answer Correct Answer: A) Transport of water and mineral ions. 7. What would happen to a plant if its xylem were damaged? A) It would not be able to perform photosynthesis. B) It would not be able to transport water to the leaves. C) It would stop producing sugars. D) It would not be able to reproduce. Show Answer Correct Answer: B) It would not be able to transport water to the leaves. 8. Attraction of water molecules to polar surface is known as: A) Cohesion. B) Adhesion. C) Capillarity. D) Tencile strength. Show Answer Correct Answer: B) Adhesion. 9. Which does not affect the rate of diffusion of a substance- A) Temperature and concentration gradient. B) Electrical charges of the diffusing materials. C) Presence of the other substances in the solution. D) Molecular diameter of the diffusing materials. Show Answer Correct Answer: C) Presence of the other substances in the solution. 10. What is the hypothesis that explains the movement of fluid through phloem in a plant? A) Cohesion-tension hypothesis. B) Pressure-flow hypothesis. C) Transpiration-cohesion hypothesis. D) Root pressure hypothesis. Show Answer Correct Answer: B) Pressure-flow hypothesis. 11. Particles move from a region of lesser concentration to greater concentration by ..... A) Facilitated transport. B) Diffusion. C) Active transport. D) Osmosis. Show Answer Correct Answer: C) Active transport. 12. ..... cells open and close the stomata A) Palisade. B) Guard. C) Xylem. D) Epidermis. Show Answer Correct Answer: B) Guard. 13. What controls the opening and closing of the stomata? A) Companion Cells. B) Lignin Cells. C) Guard Cells. D) Mesophyll Cells. Show Answer Correct Answer: C) Guard Cells. 14. Sunken stomata in rolled leaves primarily help xerophytes by doing what? A) Trapping moist air to lower water loss. B) Reducing diffusion distance for CO2 entry. C) Enhancing cuticle permeability to water. D) Increasing stomatal density for gas uptake. Show Answer Correct Answer: A) Trapping moist air to lower water loss. 15. Kelayuan berlaku apabila tumbuhan menyerap lebih banyak air daripada kehilangan air. A) BENAR. B) PALSU. C) All the above. D) None of the above. Show Answer Correct Answer: B) PALSU. 16. If external solution is more dilute than the cytoplasm of the cell it is said to be A) Isotonic. B) Hypotonic. C) Hypertonic. D) None of the above. Show Answer Correct Answer: B) Hypotonic. 17. How are the xylem and phloem arranged in plant roots? A) In the centre of the root. B) In bundles near the edge of the root. C) Evenly spaced out across the root. D) None of the above. Show Answer Correct Answer: A) In the centre of the root. 18. What is the purpose of conducting an experiment on water transport? A) To understand the mechanisms and efficiency of water movement. B) To analyze the chemical composition of water. C) To study the effects of pollution on water quality. D) To measure the temperature of water. Show Answer Correct Answer: A) To understand the mechanisms and efficiency of water movement. 19. Wilting occurs when: A) The roots take up too much water. B) Light intensity is very low. C) Water loss exceeds water uptake. D) The plant produces excess glucose. Show Answer Correct Answer: C) Water loss exceeds water uptake. 20. What is the primary function of xylem in plants? A) Transport of sugars. B) Transport of carbon dioxide. C) Transport of water and minerals. D) Transport of oxygen. Show Answer Correct Answer: C) Transport of water and minerals. 21. Water moves through xylem by mass flow from the leaves to the roots. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: A) False. 22. Transport proteins of endodermal cells are control points, where a plant adjusts the quantity and type of solutes that reach the xylem. Root endodermis is able to actively transport ions in one direction only because of the layer of A) Actin. B) Lignin. C) Suberin. D) Cellulose. Show Answer Correct Answer: C) Suberin. 23. Symplastic pathway involves the movement of water through the cell wall and intercellular spaces. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 24. Osmosis and diffusion are same except that in osmosis there is a A) Freely permeable membrane. B) Cell wall in between. C) Selectively permeable membrane. D) None of the above. Show Answer Correct Answer: C) Selectively permeable membrane. 25. How does humidity affect the rate of transpiration? A) Increased humidity decreases the rate of transpiration. B) Increased humidity increases the rate of transpiration. C) Humidity has no effect on transpiration. D) Increased humidity stops transpiration. Show Answer Correct Answer: A) Increased humidity decreases 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