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TROPISM [1 record]

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Record 1 2007-07-31

English

Subject field(s)
  • Living Matter - General Properties
DEF

An orientation or growth response of a non-motile organism or one of its parts towards (positive) or away from (negative) a stimulus.

CONT

... responses to stimuli are called tropisms, from the Greek word tropein, meaning to turn. Response to chemical action is called chemotropism; to light, heliotropism; to heat, thermotropism; to food, sitotropism; to electricity, electropism or galvanotropism; to touch, thigmotropism; to oxygen, oxytropism; to gravity, geotropism, etc.

French

Domaine(s)
  • Propriétés générales de la matière vivante
DEF

Réaction d'orientation, ou de locomotion orientée (mouvement), causée par des agents physiques ou chimiques.

Spanish

Campo(s) temático(s)
  • Propiedades generales de la materia viva
DEF

Movimiento o atracción de un organismo en una dirección o hacia algún estímulo determinado.

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