Chapter 39 Plant Responses. Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings I. Plant hormones Chemical signals that.
Chapter 39
Chapter 39 Reading Quiz 1.What are the three parts to a signal- transduction pathway? 2.What is the general term for chemicals that coordinate the parts.
Chapter 39 Notes Plant Responses to Internal and External Signals.
