Light micrograph of winged pollen grains of Pinus sylvestris. Each pollen grain has two wing-like structures which enables it to float in air,as an adaptation for dispersal by the wind. Male cones positioned high in the tree emit this pollen which must reach female cones positioned in other trees,sometimes a great distance away. Magnification: x320 at 35mm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Nuridsany, Claude / Perennou, Maria |
Taille de l’image : | 5096 px × 3502 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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