Images Dated 2nd October 2002
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Choose from 20 pictures in our Images Dated 2nd October 2002 collection for your Wall Art or Photo Gift. Popular choices include Framed Photos, Canvas Prints, Posters and Jigsaw Puzzles. All professionally made for quick delivery.
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Featured 2 Oct 2002 Print
Section through Oak wood
Light micrograph of a transverse section through the wood (secondary xylem) of an oak tree, Quercus robur, showing annual growth rings (horizontal bands) & prominent rays (pale, vertical stripes). Xylem tissue is composed of tracheary vessels which carry water & nutrients from the roots to the leaves. This image shows about six years growth; the porous horizontal bands are layers of large-vesseled spring wood, whereas the bands of dense, compact wood were laid down in the summer, at the end of the growing season. The change from spring to summer wood occurs suddenly in oaks, whereas the transition is often much more gradual in other trees. Magnification: x5 at 35mm size
© POWER AND SYRED/SCIENCE PHOTO LIBRARY
