Cucumber pollen,SEM

Numéro d’image : 11539513
Cucumber pollen,SEM
Cucumber pollen. Coloured scanning electron micrograph (SEM) of pollen grains (green) from a cucumber plant (Cucumis sativus). Each pollen grain contains a male gamete (reproductive cell) that is intended to fertilise ovules or eggs (the female gametes) of another flower,initiating the formation of a seed. Cucumber plants ordinarily have both male and female flowers on the same plant,and some agent is required to transfer the pollen between flowers of the same or of different plants. The outer wall (exine) of each pollen grain is highly sculpted to aid the dispersal of the pollen grains but,as with other cucurbits,cucumber pollen is large and sticky,so pollination relies heavily on bees
Licence : Droits gérés
Crédit: Science Photo Library / Nishinaga, Susumu
Taille de l’image : 3050 px × 4052 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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