examples of taxis/kinesisWatch
I was wondering if anyone else has some websites that are actually any use? I have spent quite a while looking by now, but I have to confess that I'm a bit of a technophobe at the best of times, so it could be I'm not using clear enough key words?
any help appreciated!
Woodlice like damp conditions...if the environment is too dry, they will move more often (although in random directions), until they find a damp environment. They will then move less often to try and stay in that environment. Note that the movement is nondirectional...instead the organism simply moves more, or less in response to a stimulus.
Example of taxis - directional movement in response to a stimulus
When you leave a plant in the window during the summer, it will grow towards the window (i.e. towards the source of light). This is called positive phototaxis because it is a directional movement towards the light (rather than a nondirectional or random movement). Negative phototaxis would be a directional movement away from the light. Hence, taxis can occur both towards or away from a stimulus depending on the organism and stimulus in question.
There are hundreds of examples of taxis....for example, most bacteria are chemotaxic; they movement towards or away from a chemical gradient (e.g. glucose). Thermotaxic would refer to directional movements in response to heat etc etc.