Chapter 30 - Chapter 30 The Movement of Water and Solutes...

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Chapter 30: The Movement of Water and Solutes in Plants Multiple-Choice Questions 1. Introduction; p. 667; moderate; ans: e Which of the following statements about xylem and phloem is FALSE? a. They are closely associated spatially. b. They are closely associated functionally. c. They form a continuous vascular system. d. They are involved in long-distance transport. e. Xylem transports only water and phloem transports only nutrients. 2. Movement of Water and Inorganic Nutrients through the Plant Body; p. 668; easy; ans: b Transpiration is the: a. flow of water through the xylem. b. loss of water vapor from plants. c. absorption of water by roots. d. loss of carbon dioxide from leaves. e. entry of carbon dioxide into leaves. 3. Movement of Water and Inorganic Nutrients through the Plant Body; p. 668; easy; ans: d A plant loses the greatest amount of water through the: a. leaf cuticle. b. stem cuticle. c. root cuticle. d. stomata. e. lenticels. 4. Movement of Water and Inorganic Nutrients through the Plant Body; p. 668; moderate; ans: a Stomatal transpiration involves two steps: a. evaporation and diffusion. b. evaporation and active transport. c. osmosis and evaporation. d. osmosis and active transport. e. photosynthesis and respiration. 5. Movement of Water and Inorganic Nutrients through the Plant Body; p. 668; moderate; ans: e Approximately ______ percent of the water transpired by a plant is lost through its stomata. a. 1 b. 10 c. 25 d. 60 e. 90
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2 Chapter 30 The Movement of Water and Solutes in Plants 6. Movement of Water and Inorganic Nutrients through the Plant Body; pp. 668–669; difficult; ans: d In the process of stomatal closing, which of the following events occurs first? a. Water moves out of guard cells. b. Water moves into guard cells. c. Guard cell turgor pressure decreases. d. Guard cell solute concentration declines. e. Guard cell water potential increases. 7. Movement of Water and Inorganic Nutrients through the Plant Body; p. 669; moderate; ans: d Radial micellation refers to the ______ of guard cells. a. shape b. opening and closing c. orientation of proteins in the plasma membrane d. orientation of cellulose microfibrils in the cell walls e. mode of attachment between the ends 8. Movement of Water and Inorganic Nutrients through the Plant Body; p. 669; moderate; ans: d In the process of stomatal opening, the ________ walls of the guard cells ________ relative to their common walls. a. inner; move inward b. inner; move outward c. outer; move inward d. outer; move outward e. outer; remain unchanged 9. Movement of Water and Inorganic Nutrients through the Plant Body; p. 669; moderate; ans: a ______ is the most important factor affecting stomatal movements. a. Water loss b. Temperature c. The intensity of sunlight d. The length of the day e. The length of the night 10. Movement of Water and Inorganic Nutrients through the Plant Body; p. 670; difficult; ans: e Which of the following statements about ABA is FALSE?
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  • Fall '12
  • Fertuck
  • Plants, phloem, Xylem, Movement of Water

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