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Related to phototropic: geotropic, phototrophic


 (fō-tŏt′rə-pĭz′əm, fō′tō-trō′-)
Growth or movement of a sessile organism toward or away from a source of light.

pho′to·tro′pic (fō′tə-trō′pĭk) adj.


(ˌfoʊ təˈtrɒp ɪk, -ˈtroʊ pɪk)

growing toward or away from the light.
pho`to•trop′i•cal•ly, adv.
References in periodicals archive ?
Phototropic growth is the growth all plants make towards light - if you put a plant on a windowsill you'll see all the foliage twist towards the light.
Scientists used a phototropic bacterium - bacteria that respond to light stimuli -  known as Rhodopseudomonas palustris as a catalyst to generate methane from the greenhouse gas.
Vicky Dean AMOST plants are phototropic, meaning they grow towards the light and leaves try to face the sun.
Cryptochromes may also be involved in phototropic growth of axial corallites in acroporid branching corals (Kaniewska et al.
After approximately 48 h, the phototropic nauplii moved through a hole in the division to the portion of the chamber kept under continuous light.
A dark rearing tub was necessary because phototropic pelagic darter larvae typically do not feed properly in glass or light colored containers.
The cercariae are motile, and are phototropic and chemotropic, meaning they respond to changes in light and chemical stimuli--they are especially attracted by chemicals found on mammalian skin.
Other hypotheses suggest that bioluminescence excludes negatively phototropic fungivores, or can even work as a warning signal to nocturnal fungivores (Sivinski 1998).
A MOST plants are phototropic - they grow towards the light.