Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 39, Problem 4TY
Summary Introduction
Introduction: The plant cells exchange nutrients that are required for the growth and development of the plant body. The movement of water, nutrients and carbohydrates metabolites takes place through various structures and mechanisms.
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When a cell from flaccid plant tissue is placed into a hypotonic solution:
a.
The cytoplasm will shrink and plasmolysis will occur
b.
Net water movement will be into the plant cell
c.
Lysosomes will remove the excess water, protecting the cell
d.
No net water movement will occur
e.
The plant cell will break open (lyse)
In farming communities, there is a concern that over irrigation can leech nutrients out of the soil, flood a farm area, and add salt to the soil in a process called salinization. The overall negative results are that some plants cannot germinate (grow from seed) and other adult or growing plants will die. Explain what is happening on the cell level, in regards to transport across the cell membrane, why seeds might not germinate, and why adult plants might die.
Which of the following is true of the water potential of a healthy living plant cell? ( SELECT ALL THAT APPLY) A. It has a higher solute potential (lower solute concentration) than the extracellular environment B. It is under negative pressure C. It has a lower solute potential (high solute concentration) than the extracellular enviroment D. It is under positive pressure E. It has a pressure potential equal to zero
Chapter 39 Solutions
Biology
Ch. 39.2 - Describe the direction of water movement when a...Ch. 39.3 - Prob. 1CSCh. 39.4 - Prob. 1CSCh. 39.4 - Prob. 1CCCh. 39.4 - Prob. 2CCCh. 39.4 - Prob. 3CCCh. 39.4 - Prob. 4CCCh. 39.4 - Prob. 5CCCh. 39.4 - Prob. 1EQCh. 39.4 - Prob. 2EQ
Ch. 39.4 - Prob. 6CCCh. 39.4 - Core Skill: Connections Look back to Figure 36.16,...Ch. 39 - Prob. 1TYCh. 39 - Prob. 2TYCh. 39 - Prob. 3TYCh. 39 - Prob. 4TYCh. 39 - Prob. 5TYCh. 39 - Which of the following statements best explains...Ch. 39 - What features of water explain how it can be drawn...Ch. 39 - Prob. 8TYCh. 39 - Prob. 9TYCh. 39 - Prob. 10TYCh. 39 - Prob. 1CQCh. 39 - Prob. 2CQCh. 39 - Prob. 3CQCh. 39 - Prob. 1COQCh. 39 - Prob. 2COQ
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- :Which of the following is incorrect about the apoplast as a transport route It moves through the cell vacuoles a O It is entirely by diffusion outside of the plasma membrane b O It is blocked by the endodermis.cO In some plants such as maize, sugars use this route d O Most water entering the root through root hairs use this route e O :Cephalopod squids differ from a typical snail in They have a brain with separate nerves a O They have a head with eyes b O The blood system consists of arteries and veins .c O They breathe through gills d O They no longer have a radula e Oarrow_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_forwardThe diagram below shows the three pathways for water and ion entry into root cells. Identify which correspond to each image (A, B and C) and give the reasons for such identification. O vacuole cytoplasm cellular wall desmosomes water transport A water transport B water transport Carrow_forward
- These are pores in plant cell membranes that allow for a shared cytoplasm between cells Select one: a. xylem b. stomata c. apical meristem d. aquaporins e. plasmodesmotaarrow_forwardi. Based on Figure 2, identify the structure that regulates the movement of water and minerals towards the xylem in the root. ii. Name structure of the cell membrane allows it to act as a selective barrier? iii. Predict what will happen to the transportation of water and minerals through the plasma membrane if the root was poisoned and no cellular respiration occurred.arrow_forwardIn plants, water is transported through vessels called xylern. The cohesiveness of water molecules allows them to travel up the walls of the vessel. However, for most plants this is not enough to move the water all the way to the top of the plant. How do plants overcome the force of gravity and move water to their upper tissues ? Root hairs push water through the roots and up into the xylem. Plants absorb water through transpiration to supply their upper tissues with water . С The guard cells surrounding the stomata expand and contract, pushing water through the xylem. Water escapes from the leaves through transpiration, creating a vacuum which pulls water up the xylem.arrow_forward
- Compare collenchyma tissue to sclerenchyma tissue with regard to:a. the structure and composition of the cell wallb. functionsc. position in plantsarrow_forwardFigure 2 shows the cross-section of a eudicot root. i. Based on Figure 2, identify the structure that regulates the movement of water and minerals towards the xylem in the root. ii. Name structure of the cell membrane allows it to act as a selective barrier? iii. Predict what will happen to the transportation of water and minerals through the plasma membrane if the root was poisoned and no cellular respiration occurredarrow_forward(b) Water absorbed by plant roots travels by different pathways from the root hairs to the xylem. Figure 5 shows these pathways in a plant root. cell A xylem vessel root hair key pathway B Tissue D Tissue E * pathway C Figure 5: Schematic representation of water movement through the tissues of a plant root (PLEASE TURN OVER) Page 6 CONT'D from Page 5 i. Explain how water moves from the root hair to the xylem vessels in the root. ii. Identify cellA, pathway B, pathway C, tissue D and tissue E in Figure 5.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_forwardi. Based on Figure 2, identify the structure that regulates the movement of water and minerals towards the xylem in the root ii. Predict what will happen to the transportation of water and minerals through the plasma membrane if the root was poisoned and no cellular respiration occurred. iii. . Nitrate and phosphate are important anions for plants. Explain how the movement of protons (H+) influence the anions uptake across the plasma membrane of the root hair cellsarrow_forwardTransfer cells have the function of: a. Moving sugar into the cell cytoplasm. O b. Moving sugar through plasmodesmata. C. Moving symplastic water into the cell. d. Taking up water from the root hairs. e. Moving water into the leaves.arrow_forward
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