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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Chapter 35.3, Problem 8LO
Summary Introduction
To describe: The pressure-flow model of sugar translocation in phloem.
Introduction: Vascular plants consist of two specialized tissues called as xylem and phloem that act as conducting tubes in plants for the transportation of water and sugar molecules throughout the plant. Phloem vessels are involved in transporting the prepared food (glucose) from leaves to all parts of the plants.
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Consider the pressure flow model of phloem transport. How do sugars and water enter the phloem from the source? How do sugars and water move from one phloem cell to another?
The following are some statements about long distance translocation of photo assimilates in higher plants:
P. Sugars are translocated in the phloem by mass transfer along a hydrostatic pressure.
Q. The translocated carbohydrates are mostly nonreducing sugars
R. Munch pressure-flow hypothesis is crucial to drive translocation in the phloem
S. Allocation and partition of carbon within a source leaf determine the phloem loading phenomenon
Which of the following combinations of the above statements is true?
OP, Q, and R
OP. R and S
OP, Q, R and S
OP, Q, and S
Explain the pressure flow theory of phloem transport.
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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