Pine tree stem, light micrograph
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Pine tree stem, light micrograph
Pine tree stem. Coloured light micrograph of a cross-section through the stem of a pine tree. (Pinus sp.). The red wood (xylem, lower left) has resin canals in it, which are outlined in green. The resin produced by the canals contains turpentine, which stops bacteria, fungi and insects from decomposing or eating the stems or leaves. Several growth rings are also distinguishable in the xylem, which can be counted to calculate the trees age, as the cambium (thin green ring at the edge) forms one ring each year as it expands outwards. The green feature spanning these rings is the phloem, which transports nutrients around the plant. The darker region at top is the cortex, the outer portion of the stem. Magnification: x18 when printed 10cm wide
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6290119
© STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY
Cambium Cortex Cross Section Dendrology False Colour Internal Phloem Pine Plant Biology Polarised Polarized Resin Resin Canal Slice Stem Structures Tissue Transverse Wood Xylem False Coloured Light Micrograph Light Microscope Resins Section Turpentine
EDITORS COMMENTS
This stunning print captures the intricate beauty of a pine tree stem in incredible detail. The colored light micrograph reveals a cross-section of the stem, showcasing its various components and functions. The red wood, known as xylem, is prominently displayed in the lower left corner. Within this wood, resin canals are outlined in vibrant green. These canals contain turpentine, which acts as a natural defense mechanism against bacteria, fungi, and insects that may try to decompose or consume the stems or leaves. The growth rings visible within the xylem allow for an estimation of the tree's age. Each year, as the cambium (the thin green ring at the edge) expands outwards, it forms one new growth ring. Additionally, we can observe the phloem - represented by a green feature spanning these rings - responsible for transporting nutrients throughout the plant. The darker region at the top represents the cortex -the outer portion of the stem- adding depth and contrast to this image. With a magnification of x18 when printed 10cm wide, every intricate detail becomes apparent to viewers. This print not only showcases nature's remarkable structures but also highlights essential aspects of botany and biology. It serves as a testament to both scientific curiosity and aesthetic appreciation for our natural world.
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