Biology: The Dynamic Science (MindTap Course List)
Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
bartleby

Concept explainers

Question
Chapter 34, Problem 8TYK
Summary Introduction

Introduction:

The long-distance transport mechanism of organic compounds is called translocation. Translocation occurs from the source of the production of the organic substance via loading it into sieve tubes to the sink, where it is unloaded. Sucrose is the most commonly transported organic substance via the long-distance transport mechanism.

Blurred answer
Students have asked these similar questions
According to the pressure-flow model, sugar is actively transported into phloem anda. enters xylem, where it is moved toward the leaves due to transpiration.b. creates pressure to move water toward the roots.c. is transported out of the leaves through stomata.d. water follows by osmosis, providing pressure that moves the water and sugar through the phloem.
When 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.
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?
Knowledge Booster
Biology
Learn more about
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
  • Why do land plants have stomates (sometimes called stomata)? a. To allow plants to take in carbon dioxide from the atmosphere. b. All of the choices are true; none are false. c. To control water loss while allowing for the uptake of some raw materials of photosynthesis. d. They allow the plant to have some control over transpiration rates.
    Which of the following statements is/are false? A. Water is actively transported from source cells into companion cells. B. The transport of sucrose into the Osieve tube elements increases water potential in the phloem. C. The transport of water from the xylem into the phloem increases the O pressure which forces the sucrose water mixture down towards the sink. D. Transpiration cause the water to O move up to the leaves through the vessel elements. E. A and B F. B and C
    Approximately 10 percent of water within the atmosphere has been released by plants by transpiration. Which is the best method for measuring the transpiration rate within an individual plant? A. Measure osmotic pressure within the guard cells to determine amount of time stomata are open. B. Weigh the plant before and after a 24 hour period while accounting for evaporation from the soil. C. Access the abiotic conditions and how the plant has adapted to its native environment. D. Measure water loss by placing a plastic bag over a stem of the plant and subtracting the amount of water released into the bag from the amount of water within the soil.
    Recommended textbooks for you
  • Biology: The Dynamic Science (MindTap Course List)
    Biology
    ISBN:9781305389892
    Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
    Publisher:Cengage Learning
    Biology (MindTap Course List)
    Biology
    ISBN:9781337392938
    Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
    Publisher:Cengage Learning
    BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
    Biology
    ISBN:9781305967359
    Author:STARR
    Publisher:CENGAGE L
  • Biology: The Dynamic Science (MindTap Course List)
    Biology
    ISBN:9781305389892
    Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
    Publisher:Cengage Learning
    Biology (MindTap Course List)
    Biology
    ISBN:9781337392938
    Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
    Publisher:Cengage Learning
    BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
    Biology
    ISBN:9781305967359
    Author:STARR
    Publisher:CENGAGE L