Diatoms. Coloured scanning electron micrograph of the diatom Campylodiscus hibernicus. The diatoms are a distinctive group of single-celled algae containing about 10,000 species. They form a large part of the plankton at the base of the marine and freshwater food chains. The characteristic feature of diatoms is their intricately patterned,glass- like cell wall,or frustule,which is impregnated with silica. The frustule consists of 2 halves which fit together like the lid & bottom of a box. It is often decorated with rows of tiny holes,known as striae,which are arranged either radially or on the 2 sides of a central axis. Magnification: x250 at 5x7cm size. x735 at 8x10ins | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Power And Syred |
Taille de l’image : | 3849 px × 2778 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |