Biology: The Unity and Diversity of Life (MindTap Course List)
Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 27, Problem 11SQ
Summary Introduction

Concept introduction: Root hair is the hair-like outgrowth of a plant root that absorbs the water and minerals from the soil. The important function of the root hairs is the collection of water and mineral nutrients present in the soil and takes them through the roots to the rest of the body. The root hairs do not have chloroplast as it does not carry out photosynthesis.

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Root hairs____ . a. conduct water from cortex to aboveground shoots b. increase the root’s surface area for absorption c. anchor the plant in soil
Tissues Present, Primary Growth (enumerate from outermost-to innermost tissue layer; include unique tissue in the root) a. Monocot root b. Dicot root
The Casparian strip… I. is a waxy layer in the walls of the endodermal cells of the root II. promotes apoplastic movement of water and minerals across the endodermis III. provides an opportunity for regulation of mineral uptake by the plant
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