Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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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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During an experiment, a student covers all the stomata of a plant with nail polish, sealing them shut
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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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- Two major processes are involved in the dissipation of heat from plant leaves: convection of heat, and(a) Photosynthesis (b) Stomatal Conductance (c) Mineral Nutrition (d) Transpiration (e) Growtharrow_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_forward28. During respiration, most ATP is formed as a direct result of the net movement of (A) potassium against a concentration gradient (B) protons down a concentration gradient (C) electrons against a concentration gradient (D) electrons through a channel (E) sodium ions into the cell 29. Which of the following processes is carried out more efficiently by a C. plant than by a C3 plant? (A) Light absorption (B) Chemiosmotic coupling (D) Photolysis (D) Fixation of CO, (E) Transport of sugarsarrow_forward
- Plants 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_forwardMovement 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_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
- When 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_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_forwardA) The concentration of CO2 is lower inside a plant cell than in the atmosphere (outside the cell). In your own words, describe how the CO2 levels are kept low inside the plant cell and explain why this is necessary. Assume stomata are open. B) Regarding the situation presented in Part A and assuming that the stomata of the plant leaves are closed, would this favour the induction of photorespiration in a C3 plant? Explain. Make reference to relevant molecule or molecules as needed. Please clearly label your responses as A and Barrow_forward
- Sucrose 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_forwardYou place a flaccid plant cell (Ψ = -0.7 MPa) into an environment (beaker) of pure (deionized) water (Ψ = 0 MPa). Compare the initial conditions of the flaccid cell and the environment (beaker of pure water) in terms of: G) Predict the direction of water movement (into the cell, out of the cell, or no net movement) H) Predict the change in turgor pressor of the cell (increase turgor pressure or decrease turgor pressure) I) Predict the fate of the cell (plasmolyzed, turgid, or lysed)arrow_forward20 (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_forward
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