Birch stem, light micrograph
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Birch stem, light micrograph
Birch stem. Light micrograph of a transverse section through the woody stem of a birch (Betula alba) tree, showing a portion of the xylem including some of the pith (bottom left). The xylem vessels (large circular holes) in the wood are in clusters but uniformly scattered (diffuse porous wood). The rest of the wood is made up of tracheid cells. The diagonal lines are medullary rays, which transport water and minerals to the outside of the stem as well as storing food. The solid pith is composed of parenchyma cells. Magnification: x103 when printed 10 centimetres wide
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6299127
© DR KEITH WHEELER/SCIENCE PHOTO LIBRARY
Birch Cell Biology Cytology Medulla Medullary Rays Parenchyma Pith Plant Structure Stem Support Supportive Tracheid Tracheids Vessels Xylem Vessel Betula Alba Cells Light Micrograph Light Microscope Section Sectioned
EDITORS COMMENTS
This print showcases the intricate beauty of a birch stem under the lens of a light microscope. The transverse section reveals a glimpse into the inner workings of this remarkable tree species, specifically its xylem and pith regions. In this image, we can observe clusters of xylem vessels, represented by large circular holes in the wood. These vessels are uniformly scattered throughout the diffuse porous wood structure. Tracheid cells make up the majority of the wood composition, forming a network that aids in water transport within the stem. The diagonal lines visible in this micrograph are medullary rays, responsible for transporting water and minerals to both internal and external parts of the stem while also serving as storage sites for food reserves. At the bottom left corner lies an area known as pith, which consists mainly of parenchyma cells. This solid region provides support to surrounding structures and contributes to overall plant stability. With magnification at 103 times when printed 10 centimeters wide, every detail is meticulously captured in this stunning photograph from Science Photo Library. It offers us an opportunity to appreciate nature's complexity through botany and biology lenses while marveling at how these cellular components work harmoniously within birch trees' supportive framework.
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