Pollination. Coloured scanning electron micrograph (SEM) of part of a flower's pistil with pollen grains attached. The pistil is the female reproductive part of a flower,comprising one or more carpels. Here,many carpels (projections) can be seen with pollen grains (balls) attached to the sticky tips of each carpel,called stigmas. Each carpel comprises a stigma,a style (the projection between stigma and ovary),and an ovary containing eggs (not seen). Pollen,the male sex cells of a flowering plant,lands on the stigma and burrows down through the style to reach the ovary at the style's base. It then fertilises the ovum there,forming a seed | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Nishinaga, Susumu |
Bildgröße: | 3894 px × 3159 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |