Spirogyra algae and cyanobacteria. Polarised light micrograph of Spirogyra sp. filamentous green algae (green) and the cyanobacteria Rivularia sp. (background). Spirogyra is named for the spiral arrangement of its chloroplasts. Its cylindrical cells connect end to end in long green filaments. Cyanobacteria are bacteria that obtain their energy through photosynthesis. Small spherical heterocysts are present amongst the Rivularia filaments. These are specialized nitrogen-fixing cells. Magnification: x200 when printed 10 centimetres wide | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Mis, Marek |
Bildgröße: | 4558 px × 3833 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |