This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 11 Transport In Plants – Quiz 39 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 11 Transport In Plants Quiz 39 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What are parts of the plant that release sucrose or amino acids called? A) Sinks. B) Vessels. C) Stomata. D) Sources. Show Answer Correct Answer: D) Sources. 2. What is the process by which water moves from the roots to the leaves of a plant? A) Photosynthesis. B) Respiration. C) Transpiration. D) Osmosis. Show Answer Correct Answer: C) Transpiration. 3. Why don't xylem vessels collapse or burst? A) They have thick side walls and rings of hard lignin. B) They have tiny pores. C) They have no cytoplasm. D) None of the above. Show Answer Correct Answer: A) They have thick side walls and rings of hard lignin. 4. What is the upward movement of water, absorbed by roots, to all parts of the plant called? A) Ascent of Sap. B) Capillary Action. C) Adhesion. D) Transpiration Pull. Show Answer Correct Answer: A) Ascent of Sap. 5. Transpiration only occurs during the night when stomata are closed. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 6. How would you expect increasing the temperature to affect the rate of transpiration? A) Increase it. B) Decrease it. C) No change. D) Can't predict. Show Answer Correct Answer: A) Increase it. 7. A plant process that requires energy for its movement A) Root pressure. B) Diffusion. C) Osmosis. D) Active transport. Show Answer Correct Answer: D) Active transport. 8. What are the two types of cells in phloem tissue? A) Vessel elements and tracheids. B) Sieve elements and companion cells. C) Guard cells and stomata. D) Mesophyll cells and root hairs. Show Answer Correct Answer: B) Sieve elements and companion cells. 9. As a result of ..... (i) ..... a suction force is created in the xylem vessel. This force causes the water to be pulled up from the xylem in the roots to the stem and then to the leaves. This pulling force is called ..... (ii) ..... A) (i)-transpiration (ii)-transpirational pull. B) (ii)-translocation (ii)-translocational pull. C) (i)-transportation (ii)-transportational pull. D) None of the above. Show Answer Correct Answer: A) (i)-transpiration (ii)-transpirational pull. 10. Rate of transpiration decreases when ..... A) Light intensity increases. B) Humidity increases. C) Wind speed increases. D) Temperature increases. Show Answer Correct Answer: B) Humidity increases. 11. The sieve tube elements in phloem ..... A) Contain cytoplasm and nuclei. B) Contain cytoplasm but no nucleus. C) Contain nucleus but no cytoplasm. D) Contain nucleus. Show Answer Correct Answer: B) Contain cytoplasm but no nucleus. 12. Fill in the blank:The hypothesis that explains the movement of fluid through phloem tissue is called the ..... A) Pressure-flow hypothesis. B) Cohesion-tension theory. C) Transpiration-pull hypothesis. D) Root pressure theory. Show Answer Correct Answer: A) Pressure-flow hypothesis. 13. Water potential of imbibants is- A) Highly positive. B) Zero. C) Highly negative. D) Always positive. Show Answer Correct Answer: C) Highly negative. 14. What is the name given to the movement of water through a plant system? A) Photosynthesis. B) Translation. C) Transpiration. D) Osmosis. Show Answer Correct Answer: C) Transpiration. 15. Death of protoplasm is a pre-requisite for a vital function like- A) Transport of sap. B) Transport of food. C) Absorption of water. D) Gaseous exchange. Show Answer Correct Answer: A) Transport of sap. 16. Are phloem cells alive or dead? A) Alive. B) Dead. C) All the above. D) None of the above. Show Answer Correct Answer: A) Alive. 17. During the translocation of food in plants, the sink A) Has low osmotic pressure as compared to phloem sap. B) Has more osmotic pressure as compared to phloem sap. C) Receives sucrose molecules from phloem sap by facilitated diffusion. D) Is the part that synthesises the food. Show Answer Correct Answer: A) Has low osmotic pressure as compared to phloem sap. 18. Water moving through the apoplast from the soil to stele cells must crosses a plasma membrane in the cells of A) Root hairs. B) Cortex. C) Endodermis. D) Vessel. Show Answer Correct Answer: C) Endodermis. 19. Which is a major source of nutrients in plants? A) Soil. B) Leaves. C) Stem. D) Roots. Show Answer Correct Answer: D) Roots. 20. Which of the following does NOT affect rate of transpiration? A) Water in the soil. B) Temperature. C) Amount of sunlight. D) Wind. Show Answer Correct Answer: D) Wind. 21. What causes the water in xylem vessels to be under tension? A) Gravity. B) Cohesion. C) Adhesion. D) Evaporation. Show Answer Correct Answer: D) Evaporation. 22. Which statement characterizes a hypotonic solution? A) The solution has a greater solute conc. than the one it is being compared to. B) The solution has equal solute conc. to one its is being compared to. C) The solution has a lesser solute conc. than the one it is being compared to. D) None of the above. Show Answer Correct Answer: C) The solution has a lesser solute conc. than the one it is being compared to. 23. A cross-like structure is indicative of a A) Root. B) Stem. C) Branch. D) Leaf. Show Answer Correct Answer: A) Root. 24. Which of these is an example of a plant adaptation. A) A plant needs sunlight to survive. B) Vines that can stick to walls and grow up trees or buildings to get their leaves closer to the sun. C) Roots soak up water and nutrients from the soil. D) People cut down trees to make lumber for houses. Show Answer Correct Answer: B) Vines that can stick to walls and grow up trees or buildings to get their leaves closer to the sun. 25. Which of the following are responsible for transpiration?I. adhesionII. cohesionIII. evaporationIV. active transport A) I and II only. B) I, II and III only. C) I, and III only. D) I, II, III and IV. Show Answer Correct Answer: B) I, II and III only. ← 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