a reflexive movement by a motile organism by which it moves or orients itself in relation to some source of stimulation; as, chemotaxis, the motion toward or away from gradients of certain chemical compounds.
(tak´ sis) [Gr. taxis: arrange, put in order] • The movement of an organism in a particular direction with reference to a stimulus. A taxis usually involves the employment of one sense and a movement directly toward or away from the stimulus, or else the maintenance of a constant angle to it. Thus a positive phototaxis is movement toward a light source, negative geotaxis is movement upward (away from gravity), and so on.
( taks-iss) A movement toward or away from a stimulus.
Movement toward or away from a stimulation.
Act of orienting towards some external stimulus or combination of stimuli. Spatial orientation, aided by different sensory modalities, is described by the corresponding term e.g. relative to light (phototaxis), smell (chemotaxis), sound (phonotaxis), or gravity (geotaxis). If orientation is towards the source, it is called a positive taxis, and away from the source a negative taxis. In such instances individuals move in a directed fashion along a particular stimulus gradient until they reach a perceived optimal range. also see Homing, Kinesis, Navigation, Orientation, Piloting
a locomotor response toward or away from an external stimulus by a motile (and usually simple) organism
a movement of the entire animal in response to a particular stimulus
a reflex or orientation movement by termites or insects in relation to a source of stimulation
The behavior when an animal turns and moves toward or away from an external stimulus (pl.: taxes).
A taxis (plural taxes, ) is an innate behavioural response by an organism to a directional stimulus. A taxis differs from a tropism (turning response, often growth towards or away from a stimulus) in that the organism has motility and demonstrates guided movement towards or away from the stimulus .