Lexic.us

Definition of Phototropism

1. Noun. An orienting response to light.

Definition of Phototropism

1. n. The tendency of growing plant organs to move or curve under the influence of light. In ordinary use the term is practically synonymous with heliotropism.

Definition of Phototropism

1. Noun. (biology) the movement of a plant towards or away from light ¹

¹ Source: wiktionary.com

Definition of Phototropism

1. [n -S]

Medical Definition of Phototropism

1. Movement or growth of part of an organism (e.g. A plant shoot) towards (positive phototropism) a source of light, without overall movement of the whole organism. (14 Oct 1997)

Lexicographical Neighbors of Phototropism

Literary usage of Phototropism

Below you will find example usage of this term as found in modern and/or classical literature:

1. Experimental Morphology by Charles Benedict Davenport (1899)
"Seedling of Sinapis alba exhibiting positive phototropism of the stem, ab, and negative phototropism of the root, de. nn, surface of the water in which the ..."

2. The Science of Human Behavior: Biological and Psychological Foundations by Maurice Parmelee (1913)
"phototropism It has long been a well-known fact that certain plants turn their flowers, leaves, etc., towards the sun or any other source of light, ..."

3. A Textbook of Botany for Colleges and Universities by John Merle Coulter, Charles Reid Barnes, Henry Chandler Cowles (1910)
"(6) phototropism Stimulus. — Of all the external conditions that act upon plants, light is one of the most variable, for from time M time it differs in ..."

4. A Laboratory Course in Plant Physiology by William Francis Ganong (1908)
"The most familiar example, no doubt, of irritable responses of plants to external influences is the turning of green tissues towards light (phototropism or ..."

5. Journal of Applied Microscopy by Bausch & Lomb Optical Company (1903)
"HENRY R. LINVILLE. DeWitt Clinton High School. Demonstration of phototropism in Aquatic Plants. At the close of the school year last June, an aquarium jar ..."

6. Contributions from the Anatomical Laboratory by Brown University Anatomical Laboratory (1905)
"phototropism IN THE LARVAL AND EARLY ADOLESCENT STAGES OF HOM- ARUS AMERICANUS. BY PB HADLEY. Science, NS Vol. xxn, No. 569, p. 675, September 24,1905. ..."

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