Zinnia flower pistil and pollen. Coloured scanning electron micrograph (SEM) of a Zinnia sp. flower pistil (green) and pollen grains (yellow). Pistils hold a plant's female reproductive structures. They contain one or more carpels,which,in turn,contain a stigma,style and an ovary. Within the ovaries are the ovules,the female gametes (sex cells). The ovaries are fertilised by pollen grains,the male gametes | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Nishinaga, Susumu |
Bildgröße: | 3822 px × 2870 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |