Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 36, Problem 6TYK
Summary Introduction
Introduction: Flaccidity is the condition of a plant cell in which its plasma membrane is not tightly pressed against its cell wall. This condition is observed when the plant is placed in an isotonic solution where the inside and outside concentration of the solutes remains constant. In this state, the plants look weak, soft, and lack vigor.
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The osmotic potential of the plant cell is -0.1 MPa and it is placed in an 9 mM sorbitol solution (21 °C). Calculate the turgor pressure of the cell when the water potential of the cell has equilibrated to the same as that of the solution.
A plant cell with ΨW (water potential) = -2.4 is placed in pure water (ΨW = 0). What do you expect to happen to the cell?
a.
The cell will become hypotonic
b.
The cell will burst
c.
The cell will become swollen and turgid
d.
The cell’s cytoplasm will shrivel
Explain what would happen if a plant cell was placed in a hypotonic environment and why (be sure to include solute concentrations, water movement and turgor pressure in your explanation)?
Chapter 36 Solutions
Study Guide for Campbell Biology
Ch. 36 - Prob. 1IQCh. 36 - a. A flaccid plant cell has a water potential of...Ch. 36 - Prob. 3IQCh. 36 - Prob. 4IQCh. 36 - Prob. 5IQCh. 36 - Prob. 6IQCh. 36 - Prob. 1SYKCh. 36 - Prob. 2SYKCh. 36 - If a plant has a phyllotaxy of alternate leaves...Ch. 36 - Prob. 2TYK
Ch. 36 - Prob. 3TYKCh. 36 - Prob. 4TYKCh. 36 - Prob. 5TYKCh. 36 - Prob. 6TYKCh. 36 - Prob. 7TYKCh. 36 - Prob. 8TYKCh. 36 - Prob. 9TYKCh. 36 - Prob. 10TYKCh. 36 - Prob. 11TYKCh. 36 - Prob. 12TYKCh. 36 - Prob. 13TYKCh. 36 - Prob. 14TYKCh. 36 - Prob. 15TYKCh. 36 - Your favorite houseplant is wilting. Which of the...Ch. 36 - Prob. 17TYKCh. 36 - Which of the following mechanisms explains the...Ch. 36 - Prob. 19TYKCh. 36 - Prob. 20TYK
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- Imagine a cell with a water potential of –0.1 MPa being placed in a beaker of solution that also has a water potential of –0.1 MPa. Are the two water potentials in equilibrium? Would any water molecules be moving between the cell and the solution? Would there be a net movement of water? Now imagine a root in moist soil, and imagine that the root cortex cells have a water potential of –0.1 MPa and that the soil solution also has a water potential of –0.1 MPa. Would there be any net movement of water into the root?arrow_forward(1) a. The process responsible for absorption of water by root hair of plants is : a. Osmosis b. Active transport C. Diffusion b. The reason for my answer is because : a. Concentration of cell sap is lower than that of soil water b. Concentration of cell sap is higher than that of soil water C. Movement of water molecules spending energy, opposing to diffusion d. Water concentration of soil particles is lower than that of root hair cellsarrow_forwardWhat is true about osmosis? Select one: a. it is passive movement of water across a membrane b. it is an active process c. it must require special proteins d. it is the driving force for water movement from the root to the shoot e. it involves movement of water toward its highest concentrationarrow_forward
- Which of the following condition indicate a very dry soil? O Matric potential3D5 kpa O Matric potential=D0 kpa O Matric potential=-1000 kpa O Matric potential=-100 kpa O Osmotic potential= -10 pa dotermines tCarrow_forwardThe water potential of three adjacent plant cells are as follows: X 0kPa Y -1000kPa Z -4000kPa In which direction will water move?arrow_forward(2) a. Mineral salt is essential for growth of a plant. The process responsible for absorption of mineral salt is: a. Mass flow b. Diffusion Active transport C. d. Osmosis b. The reason for my answer is because : a. Absorption occurs due to concentration gradient b. Absorption occurs with the help of energy opposing to diffusion C. Movement as a bulk due to pressure changes d. Absorption through permeable membranesarrow_forward
- Which statement(s) is/are false? * A. A water potential lower than that of the soil draws water into the roots and a water potential lower than that of the stem draws water into the leaf. B. A water potential lower than that of the soil draws water into the roots and a water potential higher than that of the stem draws water into the leaf. C. Water potential and solute concentration increases from the roots to the top of the plant. D. Water enters the plant through the root hairs and exits through the lenticels and stomates. E. A and D F. B and Carrow_forwardImagine you have a plant with a water potential of -0.1 MPa in the root tissue. What would happen if you place the roots of this plant in a 0.1 M solution of sucrose (water potential is -0.23 MPa)? The net water flow would be from the tissue into the sucrose solution The net water flow would occur only as ATP was hydrolyzed in the tissue The net water flow would be from the sucrose solution into the tissue The net water flow would be in both directions and the concentration of water would remain equal The net water flow would be impossible to determine from the values given herearrow_forwardA plant cell placed in distilled water will…arrow_forward
- 3. Two neighbouring plant cells are shown in the figure below. Cell A has a higher water potential than cell B. (Remember, the closer the water potential is to zero, the higher it is).arrow_forwardIn a beaker containing 0% NaCl, you place a cell which contains 0.9% NaCl. NaCl doesn t cross the membrane. What will be the result?" a There will be net movement of water into the cell. b There will be net movement of NaCl into the cell. c There will be net movement of water out of the cell. d There will be net movement of NaCl out of the cell. e The cell will swell.arrow_forwardWhich the following statement is FALSE:?a. Relative water content is not a very sensitive index because leaves can show strong responses to <2% change in RWCb. Relative water content is not a very sensitive index because it gives no information about the forces for water movementc. Relative water content is equal the ratio of the mass of water in a given leaf over the mass of water when that leaf was fully saturatedd. Relative water content is equal the ratio of the mass of water in a dry leaf over the mass of water when that leaf was fully saturatedarrow_forward
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