Phototropism - Wikipedia, the free encyclopedia
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Phototropism is directional growth in which the direction of growth is determined by the direction of the light source. In other words, it is the growth and response to a light stimulus. Phototropism...
en.wikipedia.org/wiki/Phototropism
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Phototropism (pronounced foe-TA-tro-piz-em) is the growth of a plant in the direction of its light source. Plants are very sensitive to their environment and have evolved many forms of "tropisms" in order to ensure their survival.
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www.scienceclarified.com/Oi-Ph/Phototropism.html
www.scienceclarified.com/Oi-Ph/Phototropism.html
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Phototropism is a plant's response to light. Learn more! ... Phototropism is generally described as a plant's response to light. There are two kinds of phototropism: positive photropism, or the growth of a plant stem towards light, and negative phototropism, or the growth of a plant's roots away from light.
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www.essortment.com/all/phototropism_rdwn.htm
www.essortment.com/all/phototropism_rdwn.htm
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Britannica online encyclopedia article on phototropism (biology), Light affects both the orientation of the seedling and its form. ... In addition to promoting normal growth in plant length, auxins influence the growth of stems toward the light (phototropism) and against the force of gravity (geotropism).
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www.britannica.com/EBchecked/topic/458258/phototropism
www.britannica.com/EBchecked/topic/458258/phototropism
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Change Player Size ... Science introduction to Phototropism ... Phototropism in Tomatoes - Timelapse...
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www.youtube.com/watch?v=zctM_TWg5Ik
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Light = phototropism ... The Mechanism of Phototropism ... The Darwins found that the tip of the coleoptile was necessary for phototropism but that the bending takes place in the region below the tip.
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users.rcn.com/jkimball.ma.ultranet/BiologyPages/T/Tropi...
users.rcn.com/jkimball.ma.ultranet/BiologyPages/T/Tropisms.html
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A 4 day cress seedling showing a phototropic response towards a stationary unilateral light. Note the rapid curvature of the hypocotyl towards the light but ...
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epress.com/w3jbio/vol7/firn/video_1.htm
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This page gives an introduction to phototropism (a plant's response to light). ... Originally (with J. v. SACHS, for example) was phototropism called heliotropism, because the plant grows towards the sun. The name was altered when it became clear that plants react also towards artificial sources of light (W. PFEFFER).
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www.biologie.uni-hamburg.de/b-online/e32/32b.htm
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[fō-tŏt́rə-pĭźəm, fṓtō-trṓpĭźəm]
