SEM of open stomata on tobacco leaf

Bildnummer 11537116
SEM of open stomata on tobacco leaf
Scanning electron micrograph of open stomata on the surface of a tobacco leaf Nicotiana tabacum. Stomata are breathing pores scattered over the leaf surface,& sometimes stem,that regulate the exchange of gases between the leaf's interior & the atmosphere. Stomatal closure is a natural response to darkness or drought as a means of conserving water. Each pore is controlled by the turgor of two guard cells (sides seen beneath pore's opening) on either side of it; when they are full of water the pore is open; when they lose turgor,the pore closes. Some of the pores are still growing (pimple in front,unopened in back). Magnification X1100 (at 10x8 size)
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library / Burgess, Dr. Jeremy
Bildgröße: 4926 px × 3579 px
Modell-Rechte: nicht erforderlich
Eigentums-Rechte: nicht erforderlich
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