BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
3rd Edition
ISBN: 9781260670929
Author: Hoefnagels
Publisher: MCG CUSTOM
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Question
Chapter 21.6, Problem 3MC
Summary Introduction
To determine:
The explanation of the pressure flow theory of phloem transport.
Introduction:
Phloem is a vascular tissue which transports sugar from a photosynthetic cell to the plant’s nonphotosynthetic cells. The organic compounds, carried in phloem, are dissolved in phloem sap. The phloem sap is a solution which includes carbohydrates, water, and minerals. It also contains amino acids, hormones, messenger RNA molecules, and enzymes.
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Explain the pressure flow theory of phloem transport.
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Chapter 21 Solutions
BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
Ch. 21.1 - Prob. 1MCCh. 21.1 - Prob. 2MCCh. 21.2 - Prob. 1MCCh. 21.2 - Prob. 2MCCh. 21.2 - Prob. 3MCCh. 21.3 - Prob. 1MCCh. 21.3 - Prob. 2MCCh. 21.3 - Compare and contrast tracheids, vessel elements,...Ch. 21.4 - Prob. 1MCCh. 21.4 - Prob. 2MC
Ch. 21.4 - Prob. 3MCCh. 21.4 - Prob. 4MCCh. 21.5 - Prob. 1MCCh. 21.5 - Prob. 2MCCh. 21.5 - Prob. 3MCCh. 21.5 - Prob. 4MCCh. 21.6 - Prob. 1MCCh. 21.6 - Prob. 2MCCh. 21.6 - Prob. 3MCCh. 21.6 - Prob. 4MCCh. 21.6 - Prob. 5MCCh. 21 - Prob. 1MCQCh. 21 - Which of the following is a supportive cell type...Ch. 21 - Prob. 3MCQCh. 21 - Prob. 4MCQCh. 21 - Prob. 5MCQCh. 21 - Prob. 6MCQCh. 21 - Prob. 7MCQCh. 21 - Prob. 1WIOCh. 21 - Prob. 2WIOCh. 21 - Prob. 3WIOCh. 21 - Prob. 4WIOCh. 21 - Prob. 5WIOCh. 21 - Mammals exchange gases in the alveoli of the...Ch. 21 - Prob. 7WIOCh. 21 - Prob. 8WIOCh. 21 - Prob. 9WIOCh. 21 - Prob. 10WIOCh. 21 - Prob. 11WIOCh. 21 - Prob. 12WIOCh. 21 - The Cork Forest Conservation Alliance is a...Ch. 21 - Review Burning Question 21.21. While controlled...Ch. 21 - Review the Survey the Landscape figure in the...Ch. 21 - Prob. 2PITCh. 21 - Prob. 3PIT
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- Describe how roots absorb positively charged mineral ions by the process of cation exchange.arrow_forwardIf the tension in the xylem vessel becomes too great, gas bubbles will form. Explain this phenomenon countermeasures by plant to address this issue.arrow_forwardExplain why xylem transport is unidirectional and phloem transport bi-directional.arrow_forward
- Explain the movement of water in a plant according to thecohesion-tension model of xylem transport.arrow_forwardIn what conditions apoplastic transfer of phloem unloading will be necessary and why? *arrow_forwardExplain the movement of organic nutrients in a plant according to the pressure-flow model of phloem transport.arrow_forward
- Compare the energy needs of a plant for the movement of water in the xylem according to the cohesion-tension model to the movement of phloem sap according to the pressure-flow model?arrow_forwardDescribe how bulk flow occurs in the xylem and phloem offlowering plants.arrow_forwardExplain in detail the mechanism of transport in phloem?arrow_forward
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