STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Xylem plant cells. Coloured scanning electron micrograph (SEM) of a bundle of tracheid cells from a softwood toothpick. Each tracheid has a thick lignified cell wall (green), which provides structural support to the stem. Tracheid cells transport water and mineral nutrients from the roots throughout the plant. Magnification: x1500 when printed at 10 centimetres wide.
Model release not required. Property release not required.