Chapter 25, Problem 11A

Summary Introduction

Introduction:

Phloem tissue which is made up of sieve tubes and companion cells, is responsible for the transports of 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.

The sources of sugar synthesis is the leaf of a plant and sink which are usually non photosynthetic parts of plants that are not able to make sugars like, fruits, flowers, shoot meristems, roots, and other storage organs.