Cedar tree stem, light micrograph
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Cedar tree stem, light micrograph
Cedar tree stem. Light micrograph of a transverse section through a stem of a cedar tree (Thujopsis dolobrata). The four ridges on the outer surface are microphyllous leaves, which surround the stem with their inner surfaces fused to the stem cortex. On the outside of the vascular cylinder (centre, round) is the secondary phloem consisting of sieve cells (pink bands) and phloem fibres (black bands). The inner xylem (orange) is made up of thick walled tracheid cells. Radial lines (dark orange) are the single celled rays composed of tracheid cells. In-between the phloem and xylem is the cambium (red band). Magnification: x14 when printed 10 centimetres wide
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Media ID 6299779
© DR KEITH WHEELER/SCIENCE PHOTO LIBRARY
Cambium Cedar Cell Biology Conifer Coniferous Cuticle Cytology Epidermis Gymnosperm Gymnosperms Phloem Plant Structure Stem Support Supportive Tracheid Tracheids Vascular Bundle Xylem Young Cells Light Micrograph Light Microscope Section Sectioned
EDITORS COMMENTS
This print showcases the intricate beauty of a cedar tree stem, captured through a light micrograph. The image reveals a transverse section of the stem, providing a glimpse into the inner workings of this majestic coniferous plant. The outer surface of the stem is adorned with four ridges, which are actually microphyllous leaves. These leaves envelop the stem by fusing their inner surfaces to the cortex, creating a supportive structure for this young cedar tree. Moving towards the center of the stem, we encounter the vascular cylinder - a round formation consisting of secondary phloem and inner xylem. The secondary phloem is composed of pink bands representing sieve cells and black bands symbolizing phloem fibers. Within this arrangement lies the orange-colored inner xylem comprised of thick-walled tracheid cells. Delicate radial lines in dark orange indicate single-celled rays made up of tracheid cells. Nestled between these two vital components is an essential layer known as cambium, represented by a red band. This region plays an instrumental role in facilitating growth and development within plants. With its meticulous detail and vibrant colors, this stunning print serves as both an artistic representation and scientific exploration into the cellular wonders found within nature's botanical creations.
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