White bryony stem, light micrograph
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White bryony stem, light micrograph
White bryony stem. Light micrograph of a transverse section through the stem of a white bryony (Bryonia alba) plant, showing a single collateral vascular bundle. The bundle has an outer and inner phloem (blue) with large sieve tubes, some of which show sieve plates and companion cells, and an inner xylem (crimson) with large vessels and small woody parenchyma tissue. The cambium (small, light blue cells) is in-between the phloem and xylem. Surrounding the vascular bundle is the ground tissue parenchyma. Magnification: x37 when printed 10 centimetres wide
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6338583
© DR KEITH WHEELER/SCIENCE PHOTO LIBRARY
Cell Biology Companion Cells Cytological Cytology Dicot Dicots Dicotyledon Dicotyledons Ground Tissue Histological Histology Microscopy Parenchyma Phloem Plates Sieve Plate Sieve Tube Stain Stained Stem Structural Structures Tissue Tubes Xylem Bryony Cells Light Micrograph Light Microscope Section Sectioned
EDITORS COMMENTS
This print showcases the intricate structure of a white bryony stem, as captured through a light micrograph. The transverse section reveals a single collateral vascular bundle, which serves as the plant's transportation system for nutrients and water. The outer and inner phloem, depicted in shades of blue, exhibit large sieve tubes that are responsible for conducting organic materials throughout the stem. Some of these sieve tubes display sieve plates and companion cells, highlighting their vital role in facilitating nutrient flow. Contrasting against the phloem is the crimson-colored inner xylem, comprising large vessels and small woody parenchyma tissue. This network ensures efficient water transport within the plant. Nestled between the phloem and xylem lies the cambium - a cluster of small, light blue cells that actively divide to produce new layers of growth. Surrounding this complex vascular bundle is ground tissue parenchyma, providing structural support to the stem while also serving various other functions within the plant. With a magnification level of 37 times when printed at 10 centimeters wide, this image offers an up-close view into the cellular intricacies of bryonia alba - an angiosperm belonging to dicotyledonous plants. Its detailed features make it invaluable for botany enthusiasts studying histology or cell biology.
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