plants, approaches similar to Grolig and others. (2000) should be attempted in studies of roots and stem-like organs. GRAVITY EFFECTS ON PHOTOTROPISM
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www.springerlink.com/index/713WPJ9F2P6PNM29.pdf
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Light quantity and duration also have an effect on plant growth. A plant's reaction to light is called phototropism. A hormone called auxin causes plants to turn toward a light source. Lima beans are a food crop grown mainly in the Americas in warm areas.
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www.schoelles.com/Science/sciphototropism.htm
www.schoelles.com/Science/sciphototropism.htm
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The effect remains even after the UV part is taken away. Red, yellow , and green light has no effect on most plants. Red light causes a phototropic reaction...
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www.biologie.uni-hamburg.de/b-online/e32/32b.htm
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Sperry and Chaney: TGR Effect on Phototropism that 10 plants each received 0.5, 1, or 5 ppm deter- mined on the basis of dry soil weight. Twenty plants
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joa.isa-arbor.com/request.asp?JournalID=1&ArticleID=283...
joa.isa-arbor.com/request.asp?JournalID=1&ArticleID=2834&Type=2
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In nature stem phototropism likely provides plants with an effective means for maximizing photosynthetic light capture and thus may have appreciable adaptive significance (Iino, 1990; Liscum and Stowe-Evans, 2000;
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www.biosci.missouri.edu/liscum/phototropism.html
www.biosci.missouri.edu/liscum/phototropism.html
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This experiment was to see the effects of phototropism on plant growth. On the plants that survived, this effect was very noticeable, with the plants growing far to the sides in an effort to reach the light.
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www.ri.net/schools/Narragansett/NHS/scienceweb/webpages...
www.ri.net/schools/Narragansett/NHS/scienceweb/webpages00/PerG/bottomG/project.html
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grown plants, phototropic bending towards unilat- eral blue light (BL) is significantly decreased. The major known effect of norflurazon (NF) is the inhi-
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doi.wiley.com/10.1111/j.1751-1097.1987.tb07889.x
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For example, if students would like to test phototropism, they could put a control group upright under lights and an experimental group on its side under lights. To determine whether the plants are growing toward the light, Definition:The effect of geotropism on plants is tremendous, causing both the roots and the stems...
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school.discoveryeducation.com/lessonplans/programs/trop...
school.discoveryeducation.com/lessonplans/programs/tropisms/
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Auxins also play a part in phototropism, an occurrence that involves plants bending or moving away from light. The shoot tip is responsible for directional movement by the plant in response to sunlight, as this is the area where auxins can be found. Effect of Chemicals on Growth & Development in Organisms...
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www.biology-online.org/3/5_plant_hormones.htm
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