The differences between symplastic and apoplastic pathways of routing substances laterally in roots. Introduction: A plant takes up water molecules from the soil, which diffuses from the root hairs and move to the xylem vessels present in the trunk of the plant. The transport of water molecules from roots happens through specific pathways, namely, apoplast and symplast. They carry the water through a short distance.

Question

Discuss which pathway permits the passage of most solutes and water inside the roots? Which pathway allows the entry of most of the water and some of the solutes inside the root tissue? Explain how the Casparian strip creates a barrier for substance moving through this pathway and how it is circumvented.

Answer 1

Question

Chapter 34.2, Problem 1SB

Summary Introduction

To review:

The differences between symplastic and apoplastic pathways of routing substances laterally in roots.

Introduction:

A plant takes up water molecules from the soil, which diffuses from the root hairs and move to the xylem vessels present in the trunk of the plant. The transport of water molecules from roots happens through specific pathways, namely, apoplast and symplast. They carry the water through a short distance.

Expert Solution & Answer

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Students have asked these similar questions

Discuss which pathway permits the passage of most solutes and water inside the roots? Which pathway allows the entry of most of the water and some of the solutes inside the root tissue? Explain how the Casparian strip creates a barrier for substance moving through this pathway and how it is circumvented.

From the viewpoint of the plant, can you suggest a practical reason for branch roots originating internally instead of at the surface?

If the PIN2 gene is rendered non-functional by mutation it dramatically reduces the speed of the gravitropic response in the root. Explain what PIN proteins do and why the loss on PIN2 would likely affect the speed of the gravitropic response.