Tree growth rings, light micrograph
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Tree growth rings, light micrograph
Tree growth rings. Polarised light micrograph of a cross-section through a woody stem, showing a portion of an annual ring of xylem tissue with periods of seasonal growth. The wood that formed in the spring has large xylem vessels (purple circular areas) followed (above) by summer and autumn wood made up of smaller vessels and bands of supporting fibres (yellow-brown). The large radiating columns of cells are the medullary rays (red-brown), which transport water to the outer tissues of this woody stem
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6334503
© DR KEITH WHEELER/SCIENCE PHOTO LIBRARY
Cellular Cross Section Growth Ring Nutrient Transport Phloem Polarised Light Micrograph Polarised Light Microscopy Polarized Stem Tissue Transverse Vascular Bundle Vascular Bundles Water Transport Xylem Cells Light Micrograph Light Microscope Section Sectioned
EDITORS COMMENTS
This print from Science Photo Library showcases the intricate beauty of tree growth rings. Through a polarised light micrograph, we are granted a glimpse into the hidden world within a woody stem. The image reveals an annual ring of xylem tissue, representing periods of seasonal growth. As our eyes explore this mesmerizing cross-section, we can observe the different characteristics of wood formed during various seasons. The spring wood stands out with its large xylem vessels, depicted as striking purple circular areas. Moving upwards, we encounter summer and autumn wood composed of smaller vessels and bands of supporting fibres in a warm yellow-brown hue. An intriguing feature that catches our attention is the presence of medullary rays - those magnificent radiating columns of cells painted in shades of red-brown. These rays play a crucial role in transporting water to the outer tissues of this woody stem. In this single snapshot, nature's meticulous craftsmanship unfolds before us - revealing not only the complexity but also the elegance inherent in every living organism. This photograph serves as a testament to botany's wonders and reminds us that even at microscopic levels, life thrives with purpose and ingenuity.
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