SEM of open stomata on tobacco leaf

Bildnummer 11537124
SEM of open stomata on tobacco leaf
False colour scanning electron micrograph of open stomata on the surface of a tobacco leaf Nicotiana tabacum. Stomata are breathing pores scattered over the leaf surface,and sometimes stem,that regulate the exchange of gases between the leaf's interior and the atmosphere. Stomatal closure is a natural response to darkness or drought. Each pore is controlled by the turgor of two guard cells on either side; when the guard cells are full of water the pore is open; when they lose turgor,the pore closes. Some of the pores here are still growing and are small. A large glandular trichome,or leaf hair,is also seen. Magnification: X 100 at 35mm size. Original is BW print b745/167
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library / Burgess, Dr. Jeremy
Bildgröße: 3557 px × 2480 px
Modell-Rechte: nicht erforderlich
Eigentums-Rechte: nicht erforderlich
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