Biology
Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 57.2, Problem 3CC
Summary Introduction

To describe: The effective defense system in deterring invertebrate herbivores.

Introduction: Plants have developed some defense mechanism to protect themselves from animals. Some plants have modified their leaves to thorns and spines as a part of the defense mechanism. Some plants have developed chemicals to protect themselves from a predator.

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A tobacco plant has successfully fended off plant pathogen via hypersensitive response (HR). (i) What would you be able to observe on the plant and explain the processes that happened at cellular level? What are the benefits for the tobacco plant that has developed systemic acquired resistance (SAR) in comparison to HR? (ii) (ii) Name the chemical compounds responsible in triggering SAR and how would this signal be transmitted?
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