Biology (MindTap Course List)
10th Edition
ISBN: 9781285423586
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Textbook Question
Chapter 35, Problem 7TYU
Water potential is (a) the formation of a proton gradient across a cell membrane (b) the transport of a watery solution of sugar in phloem (c) the transport of water in both xylem and phloem (d) the removal of sucrose at the sink, causing water to move out of the sieve tubes (e) the free energy of water in a particular situation
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Chapter 35 Solutions
Biology (MindTap Course List)
Ch. 35.1 - Prob. 1LOCh. 35.1 - Prob. 2LOCh. 35.1 - Prob. 3LOCh. 35.1 - Prob. 1CCh. 35.1 - Prob. 2CCh. 35.1 - Prob. 3CCh. 35.1 - Prob. 4CCh. 35.1 - What is the difference between terminal and...Ch. 35.2 - Prob. 4LOCh. 35.2 - Prob. 5LO
Ch. 35.2 - Prob. 6LOCh. 35.2 - Prob. 1CCh. 35.2 - How does the tensioncohesion model explain the...Ch. 35.3 - Describe the pathway of sugar translocation in...Ch. 35.3 - Prob. 8LOCh. 35.3 - Prob. 1CCh. 35.3 - Prob. 2CCh. 35 - Prob. 1TYUCh. 35 - Ground tissue in monocot stems performs the same...Ch. 35 - Prob. 3TYUCh. 35 - Prob. 4TYUCh. 35 - Prob. 5TYUCh. 35 - Prob. 6TYUCh. 35 - Water potential is (a) the formation of a proton...Ch. 35 - Prob. 8TYUCh. 35 - Prob. 9TYUCh. 35 - Which of the following is a mechanism of phloem...Ch. 35 - How does increasing solute concentration affect...Ch. 35 - Prob. 12TYUCh. 35 - Prob. 13TYUCh. 35 - Prob. 14TYUCh. 35 - EVOLUTION LINK Like stems in general, some vines...Ch. 35 - Prob. 16TYU
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- How may a plant respond to severe heat stress?(A) by reorienting leaves to increase evaporative cooling(B) by creating air tubes for ventilation(C) by producing heat-shock proteins, which may protect theplant’s proteins from denaturing(D) by increasing the proportion of unsaturated fatty acidsin cell membranes, reducing their fluidityarrow_forwardWhich of the following is a mechanism of water movement in xylem that combines the evaporative pull of transpiration with the cohesive and adhesive properties of water? (a) pressure– flow (b) tension–cohesion (c) root pressure (d) active transport of potassium ions into guard cells (e) guttationarrow_forwardWhen plant cells are in a hypotonic medium, they (a) undergo plasmolysis (b) build up turgor pressure (c) wilt (d) decrease pinocytosis (e) lose water to the environmentarrow_forward
- Movement of phloem sap from a source to a sink(A) occurs through the apoplast of sieve-tube elements.(B) depends ultimately on the activity of proton pumps.(C) depends on tension, or negative pressure potential.(D) results mainly from diffusion.arrow_forwardPlants obtain water and nutrients from the soil.a. What structure in a plant uses water in a metabolic reaction? What is this metabolic process called? b. Describe in detail two mechanisms by which water can move from the roots to this location c. If a plant was exposed to saltwater, how would it affect the above processes? Be specific, including a discussion of water potential d. How do plants absorb minerals from the soil? Does this process require energy?arrow_forwardIn a lab, a scientist would like to explore the effect of solute concentration in the xylem on sugar transport in a plant. He adds salts and minerals to the xylem tissue to increase the solute concentration and a radioactive substance to the leaves that are incorporated into the sugars during photosynthesis. At some point he adds a substance to detect the radioactive material and finds that it is all still situated in the leaves and has not been transported to the sink. Explain, using the pressure flow or mass flow hypothesis why the sugar has not been transported to the sink (4).arrow_forward
- Draw a simple flow diagram or sketch to illustrate the flow path of water through a plant, from the point of uptake from the soil to transpiration and… (read in image below)arrow_forwardB) If you have a mesophyll cell in a leaf (a living, parenchyma cell in a leaf) with a slight positive turgor pressure (Yp = 0.01 MPa) and solutes (Ys = -3.0 MPa), and it is next to a xylem vessel element with very few solutes in the xylem sap (Ys = -0.01 MPa) but high physical tension (Yp = - 2.0 MPa), which way will water flow? a) from the mesophyll cell into the vessel element b) from the vessel element into the mesophyll cell c) neither direction. They are at equilibrium. Activa GoroSearrow_forwardSucrose enters the phloem tubes from mesophyll cells in the leaf by: O a. Proton pumps (hydrogen ions are pumped out as sucrose is pumped in). O b. Sucrose pumps. Oc. Co-transport with hydrogen ions. O d. Diffusion down a gradient. O e Osmosis (water carrying the sucrose is sucked in).arrow_forward
- 20 (8) a. Which one of the following phenomena is responsible for transportation of food through phloem tissue : a. Mass flow b. Diffusion C. Osmosis b. The reason for my answer is: a. Movement of particles for higher concentration to lower concentration b. Movement of particles of a material to one direction due to gravity C. Movement of particles of a material to direction due to pressure gradient d. Movement of materials as a bulk due to pressure gradientarrow_forwardStomata can open and close in order to modulate the transpiration stream and allow for exchange of oxygen and CO2. Stomata OPEN by…arrow_forwardWhen considering the loading and unloading of photosynthate from the phloem, which of the following is FALSE? Select one: a. Apoplastic phloem unloading enables the import of sugars against their concentration gradient into sink tissue. b. In apoplastic loading, the solute potential of the companion cells is more negative than the apoplastic space nearby. c. In apoplastic loading, proton pumps create electrochemical gradients that can be used by symporter proteins to import sugars into the companion cell. d. All the statements are true. e. Symplastic loading relies on diffusion of the sugars through plasmodesmata from photosynthetic cells to the phloem cells.arrow_forward
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