This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 11 Transport In Plants – Quiz 27 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 11 Transport In Plants Quiz 27 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The movement of molecules from their lower concentration to a higher concentration with the help of energy A) Diffusion. B) Active transport. C) Osmosis. D) Brownian movement. Show Answer Correct Answer: B) Active transport. 2. In a school garden, Abigail noticed that the leaves of the plants were crucial for their growth. What is the primary purpose of leaves in plants? A) Water storage. B) Seed production. C) Photosynthesis. D) Root anchoring. Show Answer Correct Answer: C) Photosynthesis. 3. The translocation of food takes place through A) Xylem. B) Phloem. C) Root hair. D) Stomata. Show Answer Correct Answer: B) Phloem. 4. Fill in the blank:The tendency of water to move upward through narrow tubes against gravity is called ..... action. A) Capillary. B) Diffusion. C) Osmosis. D) Adhesion. Show Answer Correct Answer: A) Capillary. 5. In a study of water movement in plants, the cut end of a leafy shoot is placed in a dilute solution of a dye. After a few hours, deposits of the dye accumulated in the leaves. The rate of movement of the dye up the stem is NOT increased by A) Humidity. B) Wind speed. C) Temperature. D) Availability of water. Show Answer Correct Answer: A) Humidity. 6. What is the process known as where water moves upward through the xylem at a fairly high rate? A) Transpiration Pull. B) Capillary Action. C) Root Pressure Theory. D) Adhesion-Tension-Transpiration Pull Model. Show Answer Correct Answer: A) Transpiration Pull. 7. Most active part of the root for salt uptake. A) The growing region of the root and the root hair zone. B) The root cap and the meristematic zone. C) The mature root zone and the vascular tissue. D) The root cortex and the endodermis. Show Answer Correct Answer: A) The growing region of the root and the root hair zone. 8. What can trigger the closure of stomata? A) Extreme drought. B) Light intensity. C) Moderate temperature. D) Slightly increased carbon dioxide concentration. Show Answer Correct Answer: A) Extreme drought. 9. Which of the following helps in the absorption of water amd mineral salts? A) Mycorrhiza. B) Anabaena. C) Nostoc. D) None of these. Show Answer Correct Answer: A) Mycorrhiza. 10. In the xylem, water flows. Which way does water flow within the xylem of the plant? A) Up to the leaves only (like a one-way street). B) From the roots up to the leaves (like a one-way street). C) From the apical meristem down to the roots (like a one-way street). D) Up to the leaves and down to the roots (like a two-way street). Show Answer Correct Answer: B) From the roots up to the leaves (like a one-way street). 11. Transpiration is the ..... A) Exchange of gases between the leaves and the atmosphere. B) Loss of water vapour through the stomata of leaves. C) Movement of water from the roots to the leaves. D) Transport manufactured food substances through the phloem. Show Answer Correct Answer: B) Loss of water vapour through the stomata of leaves. 12. What is the function of sieve tubes in phloem? A) Distributing water and minerals taken by the roots. B) Transporting manufactured food like sucrose and amino acids. C) Providing structural support to the plant. D) Storing glucose produced during photosynthesis. Show Answer Correct Answer: B) Transporting manufactured food like sucrose and amino acids. 13. Which feature would be most helpful to a plant in a desert? A) Small leaves. B) Large seeds. C) Small roots. D) Smelly flowers. Show Answer Correct Answer: A) Small leaves. 14. Which of the following is not capable of speeding up the rate of transpiration in plants? A) Increase in sunlight intensity. B) Increase in atmospheric carbondioxide. C) Increase in leaf temperature. D) Increase in wind speed. Show Answer Correct Answer: B) Increase in atmospheric carbondioxide. 15. Water travels through A) Phloem. B) Xylem. C) Veins. D) Tubes. Show Answer Correct Answer: B) Xylem. 16. How are the xylem and phloem arranged in leaves? A) Xylem above, phloem below. B) Xylem below, phloem above. C) Xylem and phloem side by side. D) None of the above. Show Answer Correct Answer: A) Xylem above, phloem below. 17. Facilitated diffusion-I. Is a very specific processII. Is a passive processIII. Helps the substances, hydrophilic in nature, to be transported across the membraneIV. Is faster than active process A) All are correct. B) I, IV are correct. C) I, II and IV are correct. D) All are correct except IV. Show Answer Correct Answer: D) All are correct except IV. 18. Numerous tiny ..... vessels within the roots of plants join up to form large vessels, collecting large amount of water and dissolved substances and transporting them towards the leaves, ..... , and ..... of plants A) Xylem, roots, stem. B) Phloem, fruit, flower. C) Xylem, fruits, stem. D) Xylem, fruits, flower. Show Answer Correct Answer: D) Xylem, fruits, flower. 19. What is the main force that drives the movement of water in the xylem? A) Transpiration pull. B) Gravity. C) Osmosis. D) Capillary action. Show Answer Correct Answer: A) Transpiration pull. 20. Which part of the leaf mainly carries out transpiration? A) Midrib. B) Veins. C) Stomata. D) Chloroplasts. Show Answer Correct Answer: C) Stomata. 21. The concentration of water is higher in the soil than in plant root cells. Water moves into root cells of a plant by ..... A) Facilitated Diffusion. B) Simple Diffusion. C) Active Transport. D) Osmosis. Show Answer Correct Answer: D) Osmosis. 22. Which theory of water transport states that hydrogen bonding allows water to maintain a continuous fluid column as water is pulled from roots to leaves A) Fusion. B) Evaporation. C) Pressure flow. D) Cohesion-tension. Show Answer Correct Answer: D) Cohesion-tension. 23. Phloem transports water and inorganic ions 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. 24. Which explanation best connects leaf transpiration to upward xylem flow in the stem? A) Transpiration lowers soil potential, reversing gradient. B) Transpiration increases stem pressure, stopping cohesion. C) Transpiration raises root potential, pushing sap downward. D) Transpiration reduces leaf potential, pulling water upward. Show Answer Correct Answer: D) Transpiration reduces leaf potential, pulling water upward. 25. Explain the difference between xylem and phloem in plants. A) Xylem transports water and minerals, while phloem transports sugars and organic compounds. B) Xylem transports sugars and organic compounds, while phloem transports water and minerals. C) Xylem and phloem are the same and transport the same substances. D) Xylem and phloem both transport water and minerals. Show Answer Correct Answer: A) Xylem transports water and minerals, while phloem transports sugars and organic compounds. ← 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