3 Through which part of the leaf does water transpire? B epidermis C xylem 4 When the guard cells have a water pressure, they become and close the stoma. A. low, turgid B. low flaccid C high, turgid D. high. flaccid 5 Which of the following systems functions to absorb water and minerals? B stem D. flower 6 A cell that is hypertonic A. will experience a net movement of water into the cell from the surrounding environment B. has a lower concentration of solutes than the surrounding environment C. will experience a net movement of water out of the cell into the surround environment D. is in danger of plasmolysis 7 What is the term for a situation in which water osmoses out of a cell and into the surrounding environment? B plasmolysis C. hemoly D hydrostatic pressure increase 8 Which types of molecules usually will not pass through the membrane's lipid core? B D polar 9 During the two procedures from lab, what was the indicator that cell membranes were damaged? A. Betacyanin leaked from the tonoplast and the plasma membrane, turning the water red B. Betacyanin was absorbed from the water turning the tonoplast red C. Tonoplasts were produced D. The cell membrane pulled away from the cell wall 10吐水时由于高温高湿环境下 A.蒸腾拉力引起的 B.根系生理活动的结果 C.土壤中水分太多的缘故 D空气中水分多的缘故 l1把植物组织放在高渗溶液中,植物组织是 A.吸水 B.失水 C.水分动态平衡 D.水分不动 12水分沿导管或管胞上升的主要动力是 A.吐水 B.内聚力3 Through which part of the leaf does water transpire? A. stomata B. epidermis C. xylem D. chloroplast 4 When the guard cells have a ___ water pressure, they become ____ and close the stoma. A. low, turgid B. low, flaccid C. high, turgid D. high, flaccid 5 Which of the following systems functions to absorb water and minerals? A. leaf B. stem C. root D. flower 6 A cell that is hypertonic... A. will experience a net movement of water into the cell from the surrounding environment. B. has a lower concentration of solutes than the surrounding environment. C. will experience a net movement of water out of the cell into the surround environment. D. is in danger of plasmolysis. 7 What is the term for a situation in which water osmoses out of a cell and into the surrounding environment? A. lysis B. plasmolysis C. hemolysis D. hydrostatic pressure increase 8 Which types of molecules usually will not pass through the membrane's lipid core? A. permeable B. nonpolar C. small D. polar 9 During the two procedures from lab, what was the indicator that cell membranes were damaged? A. Betacyanin leaked from the tonoplast and the plasma membrane, turning the water red. B. Betacyanin was absorbed from the water turning the tonoplasts red. C. Tonoplasts were produced. D. The cell membrane pulled away from the cell wall. 10 吐水时由于高温高湿环境下 A. 蒸腾拉力引起的 B. 根系生理活动的结果 C. 土壤中水分太多的缘故 D.空气中水分多的缘故 11 把植物组织放在高渗溶液中，植物组织是________ A. 吸水 B. 失水 C. 水分动态平衡 D. 水分不动 12 水分沿导管或管胞上升的主要动力是________ A. 吐水 B. 内聚力