Mahogany wood structure, light micrograph
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Mahogany wood structure, light micrograph
Mahogany wood structure. Polarised light micrograph of a longitudinal tangential section through a woody stem (xylem) of a mahogany (Swietenia sp.) tree, showing the medullary rays (purple circles with yellow walls). These are full of living wood parenchyma cells. In-between the rays are long xylem tracheid cells (green-orange-blue) which are dead but carry water and mineral salts. The section has cut through a xylem vessel (bright orange-yellow walls) showing scalariform (ladder-like) pits for water to pass laterally. Magnification: x46 when printed 10 centimetres wide
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6299301
© DR KEITH WHEELER/SCIENCE PHOTO LIBRARY
Cell Biology Cuticle Cytology Medulla Medullary Ray Parenchyma Pits Plant Structure Polarised Light Rays Support Supportive Tracheid Tracheids Vessel Water Transport Xylem Cells Light Micrograph Light Microscope Mahogany Section Sectioned
EDITORS COMMENTS
This print showcases the intricate structure of mahogany wood under a polarised light microscope. The image depicts a longitudinal tangential section through the xylem, or woody stem, of a mahogany tree. The medullary rays, represented by purple circles with yellow walls, are prominently visible and filled with living wood parenchyma cells. These rays provide support to the tree and play a crucial role in transporting nutrients. In between the medullary rays lie long xylem tracheid cells, depicted in shades of green-orange-blue. Although these cells are dead, they serve as conduits for water and mineral salts within the tree's vascular system. The section has also cut through a xylem vessel with bright orange-yellow walls that exhibit scalariform pits resembling ladders. These pits facilitate lateral movement of water throughout the plant. With a magnification factor of 46 when printed at 10 centimetres wide, this mesmerizing photograph offers an up-close look at the cellular complexity found within mahogany wood. It highlights various elements essential to understanding its supportive nature and biological functions. This stunning visual representation not only appeals to botany enthusiasts but also provides valuable insights into plant biology and cell cytology. It is an excellent addition to any collection exploring flora and botanical structures while shedding light on how angiosperms like Swietenia sp. , commonly known as mahogany trees, transport water efficiently within their tissues.
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