EntityQ241368· pop 11· linked from 63 articlesguard cellSign in to saveone of a pair of crescent-shaped cells that surround a plant's stoma; changes in the turgidity of the cells cause the opening and closing of the stoma.ConnectionsmeristemEntityground tissueEntityleafEntitybarkEntityphloemEntityturgor pressureEntityoxygenEntitycalciumEntitypotassiumEntityphotosynthesisEntitygeneticsEntitymuscleEntitycarbon dioxideEntitytissueEntitydigital object identifierEntityInternational Standard Serial NumberEntityhistologyEntityorganelleEntitydiffusionEntityplasma membraneEntityCategoriesPlant cells