Tadpole head. Profile view of the head of a common frog tadpole (Rana temporaria),showing its gills (frond-like,centre left). This is the external gill stage. The gills are feathery and present a large surface for the uptake of oxygen. The head also shows an eye pit (dark spot,upper right) | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Clouds Hill Imaging |
Bildgröße: | 5920 px × 4736 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |