Evening primrose pollen. Coloured scanning electron micrograph (SEM) of evening primrose (Oenothera biennis) pollen grains. Pollen grains are the male gametes (sex cells) of a plant. These pollen grains exude a sticky thread known as viscin,which sticks to pollinating insects aiding the spread of the grains | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Nishinaga, Susumu |
Taille de l’image : | 3858 px × 2894 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |