Light micrograph of a group of Vorticella (small tethered balloons) adhering to the freshwater green alga Hydrodictyon (large green cells). Vorticella are sessile,ciliate protozoans of the order Peritricha. Each one has a head or zooid and a retractable stalk which anchors it to the alga. The flattened top of the head bears the mouth and a complicated wreath of hair-like cilia. The beating of the cilia creates tiny vortices in the water which wash bacteria into the organism's mouth. Magnification: x200 at 35mm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Power And Syred |
Taille de l’image : | 5197 px × 3469 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |