Chapter 32.2, Problem 3CC

Summary Introduction

To identify:

The parallels in the properties and effects of epinephrine and the plant hormone auxin.

Introduction:

The organs of endocrine system release chemical signal as hormones. A hormone is released by the organ system when it receives an internal stimulus. The glands of endocrine system release their content directly into the blood circulation and regulate other organs of the body. They have no ducts and are called as ductless glands. The hormones of endocrine system are responsible for the regulation of body metabolism and growth. Adrenal glandis an endocrine gland that is found above the kidney and release epinephrine hormone. These hormones are released during the fight or flight response.

The plants also produce hormones that play important role in the plant growth but their hormones are not secreted by glands. Their hormones are secreted by different cells in plant body. The plant hormone auxin is responsible for the growth of plants. Auxin promotes root initiation in plants.