Cucumber pollen grains. Coloured scanning electron micrograph (SEM) of pollen grains of the cucumber plant (Cucumis sativus). Pollen grains vary between species in size,shape and surface texture. They are produced in the anthers of the flower and contain the male gametes required for reproduction. Dispersal by the wind or by insects,carries the grains to other plants,resulting in the fertilisation of the female eggs present in the flower's carpel. Magnification: x350 at 6x7cm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Nishinaga, Susumu |
Taille de l’image : | 2958 px × 3686 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |