Evening primrose pollen. Coloured scanning electron micrograph (SEM) of the surface of a pollen grain from an evening primrose (Oenothera sp.) flower,showing the characteristic threads secreted by the pollen grains to hold them together in packages and probably to aid in attachment to insect pollinators. Pollen grains are the male sex cells of a flowering plant. Magnification: x5000 when printed at 10 centimetres wide | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Gschmeissner, Steve |
Bildgröße: | 4571 px × 3917 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |