Red spider lily (Lycoris radiata) pollen,coloured scanning electron micrograph (SEM). The pollen grain has sprouted a pollen tube (down centre). A pollen tube is produced by a pollen grain when it lands on the pistil (female part) of a flower. The tube burrows through the pistil to the ovaries,carrying the male sex cells to them for fertilisation | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Nishinaga, Susumu |
Bildgröße: | 3325 px × 5268 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |