Sweet pea stem, light micrograph
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Sweet pea stem, light micrograph
Sweet pea stem. Light micrograph of a section through the hollow stem of a sweet pea (Lathyrus odoratus) plant, showing a ring of vascular bundles. The outer stem is covered with a thin epidermis (red) that contains stomata (pores). Under the epidermis is the cortex of chlorenchyma ground tissue composed of cells full of chloroplasts and air cavities. The vascular bundles have an outer layer of sclerenchyma tissue (brown), underneath which is the phloem (light red) with phloem tubes, parenchyma and companion cells. Next are the xylem vessels in the xylem parenchyma tissue (red). Magnification: x5 when printed 10 centimetres wide
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6339003
© DR KEITH WHEELER/SCIENCE PHOTO LIBRARY
Back Ground Bundles Cavities Cell Biology Chloroplast Chloroplasts Companion Cells Cortex Cytological Cytology Dicot Dicots Dicotyledon Dicotyledons Epidermis Ground Tissue Histological Histology Hollow Lathyrus Odoratus Microscopy Parenchyma Phloem Pore Pores Ring Sclerenchyma Sieve Tube Stain Stained Stem Stomata Structural Structures Sweet Pea Thin Tissue Tubes Vascular Bundle Vessels Xylem Vessel Cells Light Micrograph Light Microscope Section Sectioned
EDITORS COMMENTS
This print showcases the intricate beauty of a sweet pea stem, as seen under a light microscope. The image reveals a cross-section of the hollow stem, highlighting its fascinating internal structure. A ring of vascular bundles takes center stage, demonstrating the plant's efficient transport system for water and nutrients. The outer layer of the stem is covered by a delicate epidermis, tinted in vibrant red. This protective layer contains stomata or pores that allow for gas exchange with the environment. Just beneath it lies the cortex, composed of chlorenchyma ground tissue filled with chloroplast-rich cells and air cavities. Moving inward towards the core, we encounter the vascular bundles encased in an outer layer of sclerenchyma tissue depicted in brown hues. Within these bundles lie phloem tissues responsible for transporting sugars and other organic compounds throughout the plant. Further inside are xylem vessels surrounded by xylem parenchyma tissue colored in shades of red. These vessels play a crucial role in conducting water and minerals from roots to leaves. The magnified image provides an awe-inspiring glimpse into nature's complexity at a microscopic level. It serves as a testament to both botanical wonders and scientific advancements that enable us to explore such intricate details within plants like sweet peas.
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