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A taxis (from Ancient Greek τάξις (táxis) 'arrangement, order'; [1] pl.: taxes / ˈ t æ k s iː z /) [2] [3] [4] is the movement of an organism in response to a stimulus such as light or the presence of food. Taxes are innate behavioural responses.
Evidence for the innate response of positive phototaxis in Drosophila melanogaster was carried out by altering the wings of several individual specimens, both physically (via removal) and genetically (via mutation). In both cases there was a noticeable lack of positive phototaxis, demonstrating that flying toward light sources is an innate ...
A taxi, also known as a taxicab or simply a cab, is a type of vehicle for hire with a driver, used by a single passenger or small group of passengers, often for a non ...
Tropisms can be regarded by ethologists as taxis (directional response) or kinesis (non-directional response). The Cholodny–Went model , proposed in 1927, is an early model describing tropism in emerging shoots of monocotyledons , including the tendencies for the stalk to grow towards light (phototropism) and the roots to grow downward ...
Kinesis, like a taxis or tropism, is a movement or activity of a cell or an organism in response to a stimulus (such as gas exposure, light intensity or ambient temperature). Unlike taxis, the response to the stimulus provided is non-directional.
(Positive) Rheotaxis is a form of taxis seen in many aquatic organisms, [1] e.g., fish, whereby they will (generally) turn to face into an oncoming current.In a flowing stream, this behavior leads them to hold their position rather than being swept downstream by the current.
Fixed action patterns are said to be produced by the innate releasing mechanism, a "hard-wired" neural network, in response to a sign/key stimulus or releaser. [1] [2] Once released, a fixed action pattern runs to completion. [1] This term is often associated with Konrad Lorenz, who is the founder of the concept. [1]
Chemotaxis (from chemo-+ taxis) is the movement of an organism or entity in response to a chemical stimulus. [1] Somatic cells, bacteria, and other single-cell or multicellular organisms direct their movements according to certain chemicals in their environment.