Plant stoma, SEM

Référence de la vidéo 11945571
Coloured scanning electron microscopy (SEM) of a stoma opening and closing. A stoma is a tiny pore which regulates gaseous and water exchange in plants. The stoma is controlled by its two flanking guard cells. The stoma opens in the day to allow carbon dioxide to enter the leaf. However this can lead to excessive water loss through evaporation. When water levels are low, the guard cells close the stoma to prevent more being lost.
Licence : Droits gérés
Crédit : Science Photo Library / Berrod, Thierry
Model Release : Non requis
Durée : 3 Secondes
Aspect ratio : 16/9
Restrictions : -

Prix pour cette vidéo À partir de 70 €

Publicité (Communication d'entreprise etc) À partir de 70 €
Rédactionnel (Sites web multiples etc) À partir de 125 €
Médias (Émission TV, Divertissement TV etc) À partir de 150 €

Mots-clés

;