Open stomata,SEM

Numéro d’image : 11537230
Open stomata,SEM
Open stomata. Coloured scanning electron micrograph (SEM) of open stomata on the surface of a tobacco leaf (Nicotiana tabacum). Stomata are pores found on the leaf surface that regulate the exchange of gases between the leaf's interior and the atmosphere. Stomatal closure is a natural response to darkness or drought as a means of conserving water. Each pore is controlled by two guard cells (red); the pores open when they are full of water and close when they lose water. Some of the pores are still growing (upper right and lower left). Magnification: X440 at 10 centimetres wide
Licence : Droits gérés
Crédit: Science Photo Library / Burgess, Dr. Jeremy
Taille de l’image : 4903 px × 3565 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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