This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 11 Transport In Plants – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 11 Transport In Plants Quiz 5 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which statement correctly describes xylem and phloem distribution in dicot stems? A) Present exclusively within collenchyma. B) Confined only to the epidermis layer. C) Scattered individually across the pith. D) Arranged together in vascular bundles. Show Answer Correct Answer: D) Arranged together in vascular bundles. 2. Which factor increases the rate of transpiration? A) Low humidity. B) Low light intensity. C) Low temperature. D) None of the above. Show Answer Correct Answer: A) Low humidity. 3. Which compound is primarily transported by the phloem? A) Proteins. B) Minerals. C) Sugars (like sucrose). D) Water. Show Answer Correct Answer: C) Sugars (like sucrose). 4. Which force directly causes water molecules to stick to the xylem wall? A) Tension. B) Cohesion. C) Adhesion. D) Gravity. Show Answer Correct Answer: C) Adhesion. 5. The flow of water in the xylem travels in two directions up and down. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 6. Which term means "water-loving" ? A) Cohesion. B) Nonpolar. C) Hydrophilic. D) Hydrophobic. Show Answer Correct Answer: C) Hydrophilic. 7. Identify the tissue that has a purely mechanical function (strength and support). Its walls have usually become impregnated with lignin. A) Sclerenchyma. B) Parenchyma. C) Epidermis. D) Phloem. Show Answer Correct Answer: A) Sclerenchyma. 8. How are companion cells adapted to their function? A) They have many mitochondria to release energy for transport of food substances. B) They have many mitochondria to release energy for growth of the phloem. C) They have few mitochondria to reduce resistance to flow of substances in the phloem. D) They have few mitochondria as they receive energy released from sieve tube cells. Show Answer Correct Answer: A) They have many mitochondria to release energy for transport of food substances. 9. How do root hairs help plants absorb water and nutrients more efficiently? A) By increasing the surface area. B) By storing water. C) By producing food. D) By protecting the roots. Show Answer Correct Answer: A) By increasing the surface area. 10. Which of the following increases the rate of transpiration? A) Air around the leaf with high humidity. B) Air molecules around the leaf with less kinetic energy. C) An absence of light falling on the leaf. D) Water molecules in the leaf with more kinetic energy. Show Answer Correct Answer: D) Water molecules in the leaf with more kinetic energy. 11. Describe water transport in plants A) Water is absorbed by roots, travels through the plant, and evaporates from the leaf surface. B) Water is stored in the leaves and used during photosynthesis. C) Water is absorbed by leaves and transported to the roots. D) Water is absorbed by flowers and distributed to the fruits. Show Answer Correct Answer: A) Water is absorbed by roots, travels through the plant, and evaporates from the leaf surface. 12. The phloem consists of all EXCEPT: A) Sieve tubes. B) Companion cells. C) Tracheids. D) Phloem fibres. Show Answer Correct Answer: C) Tracheids. 13. In the phloem, what provides nutrients to help sieve tube cells to transport manufactured food? A) Companion cells. B) Mitochondria. C) Xylem cells. D) None of the above. Show Answer Correct Answer: A) Companion cells. 14. Phloem transports substances made in the plant, such as sugars and amino acids, from the roots to other parts of the plant. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: A) False. 15. Are phloem cells alive or dead when matured? A) Alive. B) Dead. C) All the above. D) None of the above. Show Answer Correct Answer: A) Alive. 16. Movement of water through the cytoplasm and plasmodesmata in the root, is known as the: A) Apoplastic pathway. B) Symplastic pathway. C) Cellular pathway. D) Vacuolar pathway. Show Answer Correct Answer: B) Symplastic pathway. 17. What is the name of the apparatus used to estimate the rate of transpiration? A) Potometer. B) Hydrometer. C) Barometer. D) Thermometer. Show Answer Correct Answer: A) Potometer. 18. What is transpiration and how does it contribute to the movement of water in plants? A) Transpiration helps to pull water up from the roots to the leaves through the xylem vessels. B) Transpiration is the process of water moving from the leaves to the roots through the phloem vessels. C) Transpiration has no effect on the movement of water in plants. D) Transpiration causes water to move sideways within the plant, rather than upwards. Show Answer Correct Answer: A) Transpiration helps to pull water up from the roots to the leaves through the xylem vessels. 19. The factor that does not affect transpiration is A) Wind. B) Sunlight. C) Colour of the leaf. D) Humidity. Show Answer Correct Answer: C) Colour of the leaf. 20. One of the methods by which water ascends xylem vessels is capillarity. This is facilitated by xylem vessels which A) Are narrow. B) Are lignified. C) Are dead when mature. D) Have pits in their walls. Show Answer Correct Answer: A) Are narrow. 21. What do we call a substance that dissolves in a liquid to make a solution? A) Solute. B) Solvent. C) Solution. D) None of the above. Show Answer Correct Answer: A) Solute. 22. How is facilitated diffusion of sucrose into a companion cell achieved? A) By active transport of H+ ions to create a proton gradient and co transport back into companion cells. B) By active transport of sucrose to create a diffusion gradient. C) By diffusion of H+ ions into the phloem taking sucrose with them. D) By osmosis of water to change the water potential. Show Answer Correct Answer: A) By active transport of H+ ions to create a proton gradient and co transport back into companion cells. 23. Shoots consists of ..... including ..... and buds, flowering stems and flower buds. A) Roots; leaves. B) Stems; roots. C) Stems; leaves. D) Flower; leaves. Show Answer Correct Answer: C) Stems; leaves. 24. Nitrate ions are transported by an active transport mechanism. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 25. Is mature xylem alive or dead? A) Alive. B) Dead. C) All the above. D) None of the above. Show Answer Correct Answer: B) Dead. ← 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 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 10Class 11 Biology Chapter 11 Transport In Plants Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books