Endodermis Collection

Vascular bundle, SEM
Vascular bundle. Coloured scanning electron micrograph (SEM) of a section through a vascular bundle from a rootlet of a dicotyledon plant

Maize root, light micrograph
Maize root. Light micrograph of a section through the root of a maize plant (Zea mays) showing a vascular cylinder (centre)

Iris root, light micrograph
Iris root. Light micrograph of a section through the root of an Iris plant (Iris germanica) showing a vascular cylinder. The cylinder is comprised of a central cluster of parenchyma cells (red)

Acorus calamus rhizome, light micrograph
Acorus calamus rhizome. Light micrograph of a section through a rhizome from a sweet flag (Acorus calamus) plant. The rhizome has an outer layer with scattered collateral vascular bundles

Dendrobium orchid root, light micrograph
Dendrobium orchid root. Light micrograph of a section through an aerial root from a Dendrobium sp. orchid. The outer tissue (velamen radicum, grey) is composed of hexagonal cells

Plant root development, artwork
Plant root development. Artwork showing the first three stages in the development of a plant root. The first of these three stages (upper left)

Plant root development, diagram
Plant root development. Diagram showing the the fourth (left) and fifth (right) stages in a series showing the development of a plant root

Pine tree needle, light micrograph
Pine tree needle. Polarised light micrograph of a cross-section through a needle from a Pinus pine tree. This leaf is needle-like in order to reduce water loss (transpiration)

Corn (Zea mays) root, light micrograph
Maize root. Polarised light micrograph of a section through the root of a maize plant (Zea mays) showing a vascular cylinder

Fern rhizome, light micrograph. Transverse section through the center of a rhizome from the Killarney fern (Trichomanes speciosum)

Clubmoss stem, light micrograph
Clubmoss stem, polarised light micrograph. Transverse section through the stem of the clubmoss Lycopodium clavatum. This is the central portion of the stem consisting of the inner cortex (red)

Sarsaparilla plant stem, light micrograph
Maize root. Polarised light micrograph of a section through the root of a sarsaparilla plant (Smilax regelii) showing a vascular cylinder

Ginkgo leaf stalk, light micrograph
Ginkgo leaf stalk. Light micrograph of a transverse section through the leaf stalk (petiole) of a ginkgo tree (Ginkgo biloba)

Bracken rhizome, light micrograph
Bracken rhizome. Light micrograph of part of a cross-section through a rhizome from the bracken Pteridium aquilinum. The centre of the rhizome is off top, while the outer surface is off bottom

Section through a pine needle, LM
Section through a pine needle. Light micrograph (LM) of a section through the needle (leaf) of a pine tree, Pinus sp.. The centre of the needle is occupied by two vascular bundles

Water milfoil stem, light micrograph
Water milfoil stem. Light micrograph of a transverse section through the stem of the aquatic whorled water milfoil (Myriophyllum verticillatum) plant

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The endodermis, a vital layer within plant roots and stems, plays a crucial role in regulating the movement of water and nutrients. Underneath the epidermis lies this specialized tissue that acts as a barrier for selective nutrient absorption. Examining the endodermis under scanning electron microscopy (SEM) reveals its intricate structure. Vascular bundles can be observed running through this layer, transporting water and minerals throughout the plant. In maize roots, light micrographs showcase the distinct arrangement of cells within the endodermis, highlighting its importance in maintaining proper nutrient balance. Further exploration into different plant species uncovers fascinating variations in endodermal structures. Iris root exhibits an organized pattern of cells while Acorus calamus rhizome displays a more irregular arrangement. Light micrographs of Dendrobium orchid roots reveal unique cell shapes and sizes within their endodermis layers. Notably, Dendrobium orchids exhibit multiple light micrographs showcasing their complex root systems. These images demonstrate how the endodermis adapts to support these beautiful plants' growth and survival. Additionally, Smilax root presents an intriguing view with its densely packed cells forming a protective shield around vascular tissues. Another glimpse at Acorus calamus rhizome highlights how even closely related plants can have distinct characteristics within their endodermal layers. Lastly, exploring Clubmoss stem provides insight into how this ancient plant group's endodermis has evolved over time to suit its specific needs. In summary, studying various specimens through SEM or light micrography allows us to appreciate the diverse structures present in different types of endoderms across plant species. Understanding these intricacies helps scientists unravel nature's secrets behind efficient nutrient transport mechanisms essential for healthy growth and development.