Life: The Science of Biology 11th Edition

Published by W. H. Freeman
ISBN 10: 1-31901-016-4
ISBN 13: 978-1-31901-016-4

Chapter 34 - Transport in Plants - 34.2 - Water and Minerals Are Transported in the Xylem - 34.2 Recap - Learning Outcomes - Page 743: 2

Answer

To disprove the existence of a root pump, the roots of a tree were sawed-off and its truck was placed in a water-soluble poison. The poison rose up the trunk and killed all the cells it touched along the way. The experiment showed that pressure in the root is not necessary to push fluids up a tree through its xylem.

Work Step by Step

To disprove the existence of a root pump, the roots of a tree were sawed-off and its truck was placed in a water-soluble poison. The poison rose up the trunk and killed all the cells it touched along the way. The experiment showed that pressure in the root is not necessary to push fluids up a tree through its xylem.
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