Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 35, Problem 3TYK
Summary Introduction
Introduction:
The companion cells are associated with the sieve-tube elements and are present in the phloem. The companion cells are rich in ribosomes as well as have nuclei. They also consist of mitochondria. The companion cells act as a support to the sieve-tube elements for loading and unloading of sugar.
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Biological Science (7th Edition)
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