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Regulation of Guard Cells ... The Guard cells control the stomatal openings in the epidermis of the leaf. ... When the guard cells are activated, K+ pumps actively transport K+ into the guard cells, resulting in a high [K+] in the cells.
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www.tvdsb.on.ca/westmin/science/sbioac/plants/stoma.htm
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Stoma - Wikipedia, the free encyclopedia
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In botany, a stoma (also stomate ; plural stomata ) is a pore, found in the leaf and stem epidermis that is used for gas exchange. The pore is formed by a pair of specialized parenchyma cells kn...
en.wikipedia.org/wiki/Stoma
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Automatic download; [Begin manual download] ... Downloading the PDF version of:; Plant Cell Zhao et al. 20 (12): 3210. (855K) ... This file is in Adobe Acrobat (PDF) format. If you have not installed and configured the Adobe Acrobat Reader on your system, see Help with Printing for instructions.
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www.plantcell.org/cgi/reprint/20/12/3210
www.plantcell.org/cgi/reprint/20/12/3210
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either of two specialized cells bordering pores in the epidermis of leaves that move to control the size of the aperture in response to changes in water levels. The guard cells and pore are called the stoma, and are situated on the underside, and sometimes the top side, of leaves and on young shoots...
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encarta.msn.com/dictionary_1861691316/guard_cell.html
encarta.msn.com/dictionary_1861691316/guard_cell.html
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Definition and other additional information on Guard cells from Biology-Online.org dictionary. ... (Science: plant biology) plant cells occurring in pairs in the epidermis, flanking each stoma. Changes in turgor in the guard cells cause the stoma to open and close.
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www.biology-online.org/dictionary/Guard_cells
www.biology-online.org/dictionary/Guard_cells
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Plant cells are formed at meristems, and then develop into cell types which are grouped into tissues. Plants have only three tissue types: 1) Dermal; 2) Ground; ... Guard cells are bean-shaped cells covering the stomata opening. They regulate exchange of water vapor, oxygen and carbon dioxide through the stoma.
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www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookPLANT...
www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookPLANTANAT.html
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Guard cells are cells surrounding each stoma. They help to regulate the rate of transpiration by opening and closing the stomata. To understand how they function, study the following figures. ... Notice that in figure A the guard cells are turgid, or swollen, and the stomatal opening is large. This turgidity is caused by...
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www.phschool.com/science/biology_place/labbench/lab9/gu...
www.phschool.com/science/biology_place/labbench/lab9/guard.html
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Britannica online encyclopedia article on guard cell (plant anatomy), ...water vapour, carbon dioxide, and oxygen through this cuticle barrier. Dispersed throughout the epidermis are paired, chloroplast-containing guard cells, and between each pair is formed a small opening, or pore, called a stoma (plural: stomata).
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www.britannica.com/EBchecked/topic/247874/guard-cell
www.britannica.com/EBchecked/topic/247874/guard-cell
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