Fern rhizome,polarised light micrograph. Longitudinal section through a rhizome of the bracken fern (Pteridium aquilinum). From left to right,the tissues are: sclerenchyma (red-brown),parenchyma (blue),the vascular cylinder (meristele,yellow),and the parenchyma (blue). The vascular cylinder has a central xylem strand (multi-coloured) and on either side of the xylem is the phloem,consisting of sieve tubes. Magnification: x230 when printed at 10 centimetres high | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wheeler, Dr. Keith |
Bildgröße: | 4596 px × 6004 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |