2 SEM ACC W/RAVEN CARDED
2 SEM ACC W/RAVEN CARDED
12th Edition
ISBN: 9781264439218
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 38.4, Problem 2LO
Summary Introduction

To describe: The gene-for-gene hypothesis.

Introduction: Plants are attacked by many factors, such as bacteria, fungi, animals, protists, and so on. Several defence mechanisms occur in plants, which block or decrease the infection. The first line of defense is thick cell walls that are covered with a resilient cuticle. The second line of defense is chemicals secreted by plants that does not cause any harm to their closely related species.

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