Biology of Plants
Biology of Plants
8th Edition
ISBN: 9781429219617
Author: Evert, Ray F./
Publisher: Macmillan Higher Education
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Chapter 27, Problem 1CP
Summary Introduction

To determine: The name of six major groups of plant hormones.

Introduction: The plant hormones or phytohormones are chemical substances that regulate the growth and development of plants. Plants generally produce a wide variety of hormones.

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Explanation of Solution

The six major groups of plant hormones are given as follows:

  • Auxins
  • Cytokinins
  • Ethylene
  • Gibberellins
  • Abscisic acid
  • Brassinosteroids.
Summary Introduction

To determine: The reason for which the hormones are considered as regulators rather than stimulators.

Introduction: The hormones are the chemical messengers that are produced in one place in the body and deliver their effect in a different place of the body. They work together or independently to influence the growth and development of plants.

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Explanation of Solution

Plant hormones regulate and coordinate the growth, morphogenesis, and metabolism and are active in extremely minimal amounts. The same hormone can produce a variety of responses in different tissues or at different times in the development of the same tissue. Thereby, the plant hormones are considered as the regulators for growth and development of plants.

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How do Plants Handle Stress?; Author: Alex Dainis;https://www.youtube.com/watch?v=TYsnveEHqec;License: Standard Youtube License