Keywords |
  • Biology,
  • Botany,
  • Zoology

Endoderm

The word endoderm means two different things in embryology and botanics.

Embryology: the endoderm or endoblast is the internal embryonic leaf which forms the digestive tract (except for the mouth and rectum), the digestive glands and the respiratory tract.

Botanical: the endoderm is the innermost layer of the bark of roots. It is a layer of cylindrical cells that lie between the bark and the central cylinder where the vessels that transport sap are found.

The endoderm is a selective barrier that controls movement of substances absorbed from the earth.

This transverse section of a root shows the different anatomical structures of the root. In botanical terms, the endoderm (4th line from the top), separates the cortex of the bark from the central cylinder. © Beauchamp's Tenth Horse CC by-nc-nd 2.0 This transverse section of a root shows the different anatomical structures of the root. In botanical terms, the endoderm (4th line from the top), separates the cortex of the bark from the central cylinder. © Beauchamp's Tenth Horse CC by-nc-nd 2.0

Endoderm - 1 Photo
anatomieracineendoderme-beauchamptenthhorseccbyncnd2


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