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Class 11 Biology Chapter 11 Transport In Plants Quiz 16 (60 MCQs)

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1. What is the driving force for the process of water moving upward through the xylem in plants?
2. How does carbon dioxide enter the mesophyll cells of a leaf?
3. Which blood vessel has valves to prevent the back-flow of blood?
4. Sieve cells in the phloem have nuclei.
5. ..... is a waterproof substance in the stem of plants that minimize the loss of water through the walls of the xylem
6. How will lowered humidity affect the rate of transpiration?
7. Which feature best distinguishes dicotyledon leaves from monocotyledon leaves?
8. Which of the following statements is TRUE about xylem and phloem?
9. In plants, Water and Minerals are transported through special tissues called
10. Why might land flooded by seawater not be suitable for growing plants even after the flood water has evaporated?
11. The correct relationship between number of stomata and the rate of transpiration of plants.
12. What process moves organic compounds in the phloem?
13. If pure water is separated from a strong sugar solution by a semi permeable membrane, then the net movement of molecules is
14. What does the potometer measure?
15. Xylem and phloem are found in all parts of a plant. True or False.
16. Which tissue in plants is responsible for transporting water from roots to other parts?
17. The lower surface of leaf will have more number of stomata in a
18. Facilitated diffusion uses ..... to move materials across the cell membrane.
19. Why don't STEMS of aquatic plants get damage by water?
20. Evelyn is studying how plants grow in her garden. She learns that chlorophyll plays a crucial role in this process. What is the role of chlorophyll in plants?
21. Which one is the process that begins transpiration?
22. What are parts of the plant that release sucrose or amino acids called?
23. What is the process by which water moves from the roots to the leaves of a plant?
24. Why don't xylem vessels collapse or burst?
25. What is the upward movement of water, absorbed by roots, to all parts of the plant called?
26. Transpiration only occurs during the night when stomata are closed.
27. How would you expect increasing the temperature to affect the rate of transpiration?
28. A plant process that requires energy for its movement
29. What are the two types of cells in phloem tissue?
30. 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) .....
31. Rate of transpiration decreases when .....
32. The sieve tube elements in phloem .....
33. Fill in the blank:The hypothesis that explains the movement of fluid through phloem tissue is called the .....
34. Water potential of imbibants is-
35. What is the name given to the movement of water through a plant system?
36. Death of protoplasm is a pre-requisite for a vital function like-
37. Are phloem cells alive or dead?
38. During the translocation of food in plants, the sink
39. Water moving through the apoplast from the soil to stele cells must crosses a plasma membrane in the cells of
40. Which is a major source of nutrients in plants?
41. Which of the following does NOT affect rate of transpiration?
42. What causes the water in xylem vessels to be under tension?
43. Which statement characterizes a hypotonic solution?
44. A cross-like structure is indicative of a
45. Which of these is an example of a plant adaptation.
46. Which of the following are responsible for transpiration?I. adhesionII. cohesionIII. evaporationIV. active transport
47. True or False:vascular bundles help to support the plant
48. Xylem tissue contains living cells with nuclei.
49. What part of the leaf prevents water loss?
50. Location where substances enter the phloem
51. What happens to the water potential in root cells when minerals are actively pumped into the root xylem?
52. Increasing temperature increases the rate of water loss from a plant,
53. The semi-permeable plasma membrane is made up of phospholipid bilayers which has heads and tails, the head part of the bilayer is:
54. Which plant tissue transports water from roots upwards?
55. Why would the roots die without translocation?
56. Seeds when soaked in water, they imbibe it because of-
57. In a short plant, root pressure is strong enough to push the water up the stem.
58. Which part of the plant increases the surface area for absorption?
59. Why does a large internal surface area in leaves increase water loss?
60. A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicates that it is phloem sap?
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