Pollination. Coloured scanning electron micrograph (SEM) of pollen grains (balls) on the stigmas (tips of the projections) of a flower. Together with the ovary (not seen),which holds the eggs and the sytle,the profection between stigma and ovary,the stigma forms the female reproductive organ (pistil). Eventually,pollen tubes emerge from the grains. The pollen tubes contain the male gametes (sex cells). They grow down the style and into the ovary,where the tips of the pollen tubes rupture,releasing the gametes to fertilize the ovule (female sex cell) and produce seeds | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Nishinaga, Susumu |
Taille de l’image : | 3818 px × 2842 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |