Biology: Unity and Div. of Life (Looseleaf)
Biology: Unity and Div. of Life (Looseleaf)
14th Edition
ISBN: 9781305251311
Author: STARR
Publisher: CENGAGE L
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Chapter 28, Problem 7SQ
Summary Introduction

Introduction: Water is the most crucial factor for a plant to perform its normal cellular functions. Water is absorbed by the roots. The movement of water from the roots to the leaves can be explained using cohesion tension theory of water transport.

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Sugar transport from leaves to roots occurs by_______ . a. a pressure gradient inside sieve tubes b. different solutes at source and sink regions c. the pumping force of xylem vessels d. evaporation, tension, and cohesion
(3) a. b. The characteristics of water molecules to maintain a continuous column of water is: a. Root pressure b. Transpiration C. d. Forces Cohesion - Addison The reason for my answer is because : a. Releasing water as water vapors b. A pressure excreted by root through root system C. Releasing water from tips of leaves as liquid d. Interaction among water molecules and adsorption of water molecules to walls of xylem vessels
. Which of the following is not a typical plant response to oxygen deficit due to flooding? * A. Aerenchyma formation B. Hyponastic growth of submerged leaves C. Stomatal closure D. Induction of anaerobic stress proteins
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