BIOLOGY: CONCEPTS & INVEST. (LOOSE)
BIOLOGY: CONCEPTS & INVEST. (LOOSE)
4th Edition
ISBN: 9781260203127
Author: Hoefnagels
Publisher: MCG
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Chapter 23, Problem 10WIO
Summary Introduction

To determine:

How phloem transport occur either with or against gravity.

Concept introduction:

Phloem tissue which is made up of sieve tubes and companion cells, is responsible for the transports of phloem sap or sugars to the whole plant parts. The part which produces or synthesizes sugar is called source and the parts that receives sugars from the source are known as sink.

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