This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 11 Transport In Plants – Quiz 32 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 11 Transport In Plants Quiz 32 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Transport proteins that simultaneously move two molecules across a membrane in the same direction are called- A) Uniport. B) Antiport. C) Symport. D) Diffusive ports. Show Answer Correct Answer: C) Symport. 2. ..... connects xylem vessels to phloem vessels, whereas ..... connects phloem vessels to companion cells A) Sieve pores, plasmodesmata. B) Pits, plasmodesmata. C) Pits, sieve pores. D) Sieve pores, pits. Show Answer Correct Answer: B) Pits, plasmodesmata. 3. Conducting cells in phloem are A) Phloem parenchyma. B) Sieve tubes. C) Companion cells. D) Phloem fibres. Show Answer Correct Answer: B) Sieve tubes. 4. Identify the benefit of sunken stomata A) Increase transpiration. B) Decrease transpiration. C) Increase cellular respiration. D) Decrease cellular respiration. Show Answer Correct Answer: B) Decrease transpiration. 5. If a plant's stomata close on a hot, dry day, how could this affect the plant's rate of photosynthesis? A) The rate of photosynthesis increases significantly. B) The rate of photosynthesis decreases. C) The rate of photosynthesis remains unchanged. D) The plant produces more oxygen. Show Answer Correct Answer: B) The rate of photosynthesis decreases. 6. What is Active Transport? A) Spreading out of particles from an area of higher concentration to an area of lower concentration. B) Movement of water molecules across a partially permeable membrane from a dilute solution to a more concentrated solution. C) Movement of particles from an area of lower concentration to an area of higher concentration. D) None of the above. Show Answer Correct Answer: C) Movement of particles from an area of lower concentration to an area of higher concentration. 7. Passive transport requires no A) Concentration gradients. B) Osmosis. C) Motion. D) Energy. Show Answer Correct Answer: D) Energy. 8. Which of the following is responsible for the cohesion of water molecules? A) Hydrogen bonds between the oxygen atoms of a water molecule and cellulose in a vessel cell. B) Covalent bonds between the hydrogen atoms of two adjacent water molecules. C) Hydrogen bonds between the oxygen atom of one water molecule and a hydrogen atom of another water molecule. D) Low concentrations of charged solutes in the fluid. Show Answer Correct Answer: C) Hydrogen bonds between the oxygen atom of one water molecule and a hydrogen atom of another water molecule. 9. What is the purpose of root hairs? A) To improve the plants structure. B) To keep the roots warm. C) To increase surface area for water absorption. D) To open the stoma. Show Answer Correct Answer: C) To increase surface area for water absorption. 10. Phloem is made from living cells called A) Sieve tube elements. B) Vascular bundles. C) Paranchema. D) Collenchyma. Show Answer Correct Answer: A) Sieve tube elements. 11. What structure prevents minerals in the root xylem from leaking back into the cortex and root hairs? A) Plasmodesmata. B) Casparian strip. C) Epidermis. D) Cortex. Show Answer Correct Answer: B) Casparian strip. 12. Evergreen trees adaptation A) Evergreen trees have broad, flat leaves that absorb maximum sunlight. B) Evergreen trees have small, compact needle-like leaves that help them survive in cold climates. C) Evergreen trees lose their leaves in winter to conserve energy. D) Evergreen trees grow in tropical climates with high humidity. Show Answer Correct Answer: B) Evergreen trees have small, compact needle-like leaves that help them survive in cold climates. 13. Which condition decreases transpiration rate? A) High wind speed. B) High humidity. C) High temperature. D) Bright sunlight. Show Answer Correct Answer: B) High humidity. 14. What is the primary driving force for water movement into the root cells from the soil? A) Active transport. B) Osmosis. C) Transpiration. D) Diffusion. Show Answer Correct Answer: B) Osmosis. 15. The lignified cell wall of xylem vessels is useful for its ..... function. A) Transport. B) Absorption. C) Support. D) Translocation. Show Answer Correct Answer: C) Support. 16. What is the movement of water from an area of high concentration to an area of low concentration called? A) Transpiration. B) Translocation. C) Osmosis. D) Active Transport. Show Answer Correct Answer: C) Osmosis. 17. What will be the direction of flow of water when a plant cell is placed in a hypotonic solution? A) No flow of water in any direction. B) Water will flow in both directions. C) Water will flow out of the cell. D) Water will flow into the cell. Show Answer Correct Answer: D) Water will flow into the cell. 18. Which of the following conditions would result in open stomata? A) High levels of water in the plant. B) Low levels of water in the plant. C) All the above. D) None of the above. Show Answer Correct Answer: A) High levels of water in the plant. 19. Xylem cells are joined end-to-end with cross walls to form a long continuous tube for water to pass through. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 20. Both plants and humans have a transport system. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 21. Who am I?I am the largest (in size) blood component and have a nucleus. A) White blood cell. B) Red blood cell. C) Platelet. D) Hemoglobin. Show Answer Correct Answer: A) White blood cell. 22. Phloem sap is mainly made of A) Water and sucrose. B) Water and minerals. C) Oligosaccharides and hormones. D) None of these. Show Answer Correct Answer: A) Water and sucrose. 23. What are the two major properties of water on which ascent of sap depends? A) Adhesion and Cohesion. B) Root Pressure and Capillary Action. C) Transpiration Pull and Cohesion. D) Adhesion and Capillary Action. Show Answer Correct Answer: A) Adhesion and Cohesion. 24. Which of the following is the part of apoplast? A) Cell wall. B) Plasma membrane. C) Plasmodesmata. D) Cytoplasm. Show Answer Correct Answer: A) Cell wall. 25. Why might a plant organ be both a source and a sink at different times? A) The plant grows at night only. B) Depending on the season and function, it might store or produce sugars. C) It changes cell type. D) It switches from photosynthesis to respiration. Show Answer Correct Answer: B) Depending on the season and function, it might store or produce sugars. ← 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