Biological Science
5th Edition
ISBN: 9780321743671
Author: Scott Freeman
Publisher: PEARSON
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Chapter 38, Problem 9TYU
Summary Introduction
To review:
Compare and contrast the forces responsible for the transport of water in xylem via transpiration, root pressure and capillarity. Name the one which is a passive process.
Introduction:
The water flow throughout the xylem is accompanied by different modes of water transport. The most significant process for the transport of water in long distance pathways is transpiration. Root pressure is a transverse osmotic pressure present within the cells of a root system, and this pressure build up mostly at night as the transpiration rate is low and soil moisture content is high. Capillarity is a tendency of a liquid to rise in a column, against the force of gravity.
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