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photonasty |
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photonasty [ˈfəʊtəʊˌnæstɪ] n pl -ties (Life Sciences & Allied Applications / Botany) a nastic movement in response to a change in light intensity photonastic adj photonasty the tendency in certain plant species to respond to light by developing sufficient cellular force or growth on one side of an axis to change the form or position of the axis, as in the opening and closing of the flowers of four-o’clocks. Cf. thermonasty. — photonastic. adj. See also: PlantsHow to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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