Vascular plants (including flowering plants and trees) use specialized vessels to transport water and dissolved substances to and from every leaf, flower and root. Microscopy and photography by Eckhard Völcker; definitely worth a visit.
Cells - Characteristic of a living thing. All living things must contain at least one cell. Therefore things that are inside a cell do not count as living. Cells are essential for the rest of the characteristics of life, for example reproduction.