DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY
Macrophotograph of a leaf skeleton of the ivy plant, Hedera helix. The vascular tissue comprises the xylem, supplying water & minerals from the roots to the leaves & the phloem, which conducts the sugar manufactured in the leaves during photosynthesis to the rest of the plant. The veins are preserved due to the presence of lignin, a polymer resistant to decay, in the xylem. Mag: X2 (at 35mm size).
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