Chapter 37.1, Problem 3SB

Summary Introduction

To review:

The different methods in which chemical signals that reach the plant cells get converted into cell functions.

Introduction:

The phytohormones are small chemical compounds, which regulate the growth, flowering and metabolic activities of the plants. The plant hormones like auxin, cytokinins, and gibberellins promote the growth of plant parts, whereas abscisic acid inhibits the growth of plant parts. These hormones bind to receptors that initiate the signaling cascade leading to the activation of certain genes inside the nucleus of the cell. The receptors of the hormones may be present inside or on the cell membrane.