TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

STOMATE [2 records]

Record 1 2008-02-12

English

Subject field(s)
  • Botany
DEF

A structure composed of two guard cells and the opening between them in the epidermis of a leaf or stem, functioning in gas exchange.

OBS

Some workers prefer to use the term "stoma" for the aperture or pore only, and "stomata apparatus" for the stoma plus the guard cells.

OBS

stoma: plural stomata.

French

Domaine(s)
  • Botanique
CONT

Chaque stomate est constitué de deux cellules jumelles, les cellules de garde, disposées symétriquement de part et d'autre d'une paroi mitoyenne qui se clive en fente. Cette fente s'élargit en un large ostiole à travers lequel peuvent diffuser librement les gaz.

OBS

Les stomates contrôlent les échanges gazeux, y compris ceux de la vapeur d'eau, entre la plante et le milieu ambiant. Bien qu'il existe des stomates dans toutes les parties aériennes, ils sont plus abondants dans les feuilles.

Spanish

Campo(s) temático(s)
  • Botánica
Save record 1

Record 2 2004-05-20

English

Subject field(s)
  • Plant Biology
DEF

A minute pore in the epidermis of leaves or stems which functions in gaseous exchange between a plant and its external environment.

CONT

Epidermis of leaves ... contains numerous guard cells [placed pairwise] the open space between two paired guard cells is a stoma.

OBS

Stomas are bordered by guard cells which function in the regulation of the size of the opening: stomas plus guard cells are referred to as the stomatal apparatus.

OBS

stoma [designates usually] the opening together with its associated guard cells and accessory cells.

OBS

stoma: The plural form is stomata or stomas.

Key term(s)
  • stomata
  • stomatal opening

French

Domaine(s)
  • Biologie végétale
CONT

À l'échelle microscopique, on trouve un autre exemple de courant induit chez les végétaux qui réalisent des échanges gazeux par l'intermédiaire des stomates ou pores de la feuille.

CONT

Les stomates [...] se trouvent sur la face inférieure des feuilles [et] sont régulièrement répartis dans l'épiderme.

Spanish

Campo(s) temático(s)
  • Biología vegetal
DEF

Poro de la superficie epidérmica de las hojas que comunica los tejidos y espacios intercelulares de éstas con el exterior.

Save record 2

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