thermotaxis मीनिंग इन हिंदी

उदाहरण वाक्य

1. Thermotaxis is movement along a gradient of temperature.
2. Recent research suggests that mammalian sperm employ thermotaxis to move to an appropriate location in the female's oviduct ( see Sperm guidance ).
3. Sperm guidance by either chemotaxis or thermotaxis can potentially be used to obtain sperm populations that are enriched with capacitated spermatozoa for in vitro fertilization procedures.
4. "M . incognita " has been found to be able to move along shallower temperature gradients ( 0.001C / cm ) than any other known organism, an example of thermotaxis.
5. The temperature gradient in the rabbit oviduct was calculated to be at the order of 0.1 �C / cm ( Bahat and Eisenbach, 2006 ), within the range of known thermotaxis systems.
6. Since temperature affects almost every process, much attention has been devoted to the question of whether the measurements, mentioned just above, truly demonstrate thermotaxis or whether they reflect another temperature-dependent process.
7. Following the suggestion of Hunter ( 1998 ) that this temperature difference might serve as a cue for guiding spermatozoa to the site of fertilization, Bahat et al . ( 2003 ) demonstrated that rabbit and human spermatozoa are able to sense small temperature differences and respond to them by thermotaxis.
8. This belief was taken apart when it became clear that only few of the ejaculated spermatozoa  in humans, only ~ 1 of every million spermatozoa  succeed in entering the oviducts ( Fallopian tubes ) and when more recent studies showed that mammalian spermatozoa employ at least three different mechanisms, each of which can potentially serve as a guidance mechanism : chemotaxis, thermotaxis and rheotaxis.