This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 11 Transport In Plants – Quiz 18 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 11 Transport In Plants Quiz 18 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Cellulose in the cell walls of xylem, increases the ..... of water molecules to help resist the effect of gravity. A) Cohesion. B) Pressure. C) Adhesion. D) Arrangement. Show Answer Correct Answer: C) Adhesion. 2. Cells of the phloem are living A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 3. Why are xylem vessels efficient in transporting water? A) They have many cross walls. B) They are filled with cytoplasm. C) They are dead and form continuous tubes. D) They store starch. Show Answer Correct Answer: C) They are dead and form continuous tubes. 4. What are the specialised protein channels that help to transport water across the membrane in root hair cells? A) Proton pumps. B) Apoptosis channels. C) Water channels. D) Aquaporins. Show Answer Correct Answer: D) Aquaporins. 5. Which of the following processes utilises energy A) Active transport. B) Facilitated diffusion. C) Osmosis. D) None of the above. Show Answer Correct Answer: A) Active transport. 6. How does water travel up xylem vessels? A) By osmosis. B) By evaporation from cell surfaces. C) Flowing in a continuous column. D) None of the above. Show Answer Correct Answer: C) Flowing in a continuous column. 7. What is the process called when water moves from the roots to the leaves through xylem? A) Osmosis. B) Respiration. C) Photosynthesis. D) Transpiration. Show Answer Correct Answer: D) Transpiration. 8. The movement of water through the xylem is mostly: A) Lateral. B) Downward. C) Upward. D) Circular. Show Answer Correct Answer: C) Upward. 9. The rate of transpiration increases with A) High atmospheric CO2 level. B) Low water content of leaf. C) Shedding of leaves. D) Dry air. Show Answer Correct Answer: D) Dry air. 10. Unloading of mineral ions occurs at the fine vein endings through- A) Diffusion only. B) Active transport only. C) Diffusion and active transport. D) Facilitated diffusion and active transport. Show Answer Correct Answer: A) Diffusion only. 11. Tia looked at a leaf under a microscope and noticed a number of pores on its surface. These pores are called ..... A) Cells. B) Veins. C) Stomata. D) Chlorophyll. Show Answer Correct Answer: C) Stomata. 12. Apakah maksud transpirasi? A) Proses penukaran tenaga cahaya daripada matahari kepada tenaga biokimia. B) Proses pengeluaran air oleh tumbuhan di permukaan daun melalui hidatod. C) Proses kehilangan air dalam bentuk wap air dari permukaan tumbuhan ke udara secara penyejatan. D) Proses menggunakan air oleh akar tumbuhan. Show Answer Correct Answer: C) Proses kehilangan air dalam bentuk wap air dari permukaan tumbuhan ke udara secara penyejatan. 13. What is the effect of high salt concentration on plant cell transport? A) Increases water uptake. B) Decreases water uptake. C) No effect. D) Increases glucose transport. Show Answer Correct Answer: B) Decreases water uptake. 14. Why are pits important in xylem vessel elements? A) Block embolisms with thick lignin plates. B) Anchor vessels to surrounding parenchyma. C) Store sugars during low transpiration rates. D) Permit lateral water movement between elements. Show Answer Correct Answer: D) Permit lateral water movement between elements. 15. What causes diffusion? A) The constant, random motion of molecules. B) Magnetic attraction between atoms. C) The nuclear forces that hold atoms together. D) The tendency of atoms to form chemical bonds with one another. Show Answer Correct Answer: A) The constant, random motion of molecules. 16. Define the term "Transpiration" . A) Exchange of gases between the leaf and atmosphere. B) Loss of water vapour from the leaves and stems of the plant. C) Movement of water from the roots to the leaves. D) Movement of water through the cells of the leaf. Show Answer Correct Answer: B) Loss of water vapour from the leaves and stems of the plant. 17. Diffusion is the movement of substances A) From an area of lower concentration to higher concentration. B) From an area of lower concentration to lower concentration. C) From an area of higher concentration to lower concentration. D) From an area of higher concentration to higher concentration. Show Answer Correct Answer: C) From an area of higher concentration to lower concentration. 18. How do plants adapt to reduce water loss? A) By having a thicker cuticle and closing stomata during the hottest parts of the day. B) By increasing the number of stomata on the upper leaf surface. C) By growing larger leaves to capture more sunlight. D) By absorbing more water from the soil. Show Answer Correct Answer: A) By having a thicker cuticle and closing stomata during the hottest parts of the day. 19. How do mineral ions enter a plant? A) By osmosis in root hair cells. B) By active transport in root hair cells. C) Through the stomata. D) Through the roots. Show Answer Correct Answer: B) By active transport in root hair cells. 20. What happens to water moving via the apoplastic route when it reaches the endodermis? A) It stops moving. B) It moves via the symplastic route. C) It evaporates. D) It leaks out of the root. Show Answer Correct Answer: B) It moves via the symplastic route. 21. Translocation is the A) Transport of water in the xylem. B) Transport of water in the phloem. C) Transport of sugar in the xylem. D) Transport of sugar in the phloem. Show Answer Correct Answer: D) Transport of sugar in the phloem. 22. Where is food stored in sugar cane? A) Flowers. B) Stem. C) Roots. D) Seeds. Show Answer Correct Answer: B) Stem. 23. Which of the following is NOT part of the symplastic pathway in plants? A) Cytoplasm of root hairs. B) Lumen of xylem cells. C) Plasmodesmata. D) Cell surface membrane of cortical cells. Show Answer Correct Answer: B) Lumen of xylem cells. 24. What is the process of upward movement of a substance, especially liquids, called? A) Root Pressure. B) Capillary Action. C) Adhesion. D) Transpiration Pull. Show Answer Correct Answer: B) Capillary Action. 25. What is the plant vessel responsible for transporting water? A) Xylem. B) Phloem. C) All the above. D) None of the above. Show Answer Correct Answer: A) Xylem. ← 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