Photoperiodism is the physiological reaction of organisms to the length of day or night. It occurs in plants and animals. Photoperiodism can also be defined as the developmental responses of plants to the relative lengths of light and dark periods. ==Plants== Many flowering plants (angiosperms) use a photoreceptor protein, such as phytochrome or c...
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http://en.wikipedia.org/wiki/Photoperiodism
the functional or behavioral response of an organism to changes of duration in daily, seasonal, or yearly cycles of light and darkness. ... [11 related articles]
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http://www.britannica.com/eb/a-z/p/61
responses of plants to the relative lengths of light and dark cycles.
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http://www.encyclo.co.uk/local/20003
The response of plants to the length of a day and night (i.e. poinsettias, cactus, night blooming flowers)
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http://www.encyclo.co.uk/local/20077
<biology> Events triggered by duration of illumination or pattern of light/dark cycles: often the wavelength of the illuminating light is important as for example in control of circadian rhythm in plants. ... See: phytochromes. ... (18 Nov 1997) ...
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http://www.encyclo.co.uk/local/20973
(fo″to-pēr´e-әd-iz-әm) the physiologic and behavioral reactions brought about in organisms by changes in the duration of daylight and darkness.
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http://www.encyclo.co.uk/local/21001
Response of plants and animals to the relative duration of light and darkness.
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http://www.encyclo.co.uk/visitor-contributions.php
Events triggered by duration of illumination or pattern of light/dark cycles: often the wavelength of the illuminating light is important - as for example in control of circadian rhythm in plants. See phytochromes.
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http://www.encyclo.co.uk/visitor-contributions.php
Type: Term Pronunciation: fō-tō-pēr′ē-ō-dizm Definitions: 1. The periodic (seasonal or diurnal) activities, behavior, or changes in plants or animals brought about by the action of light.
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http://www.medilexicon.com/medicaldictionary.php?t=68643
(1) Mechanism possessed by some organisms to use photoperiod to sense seasonal time. (2) Response by organisms to changes in the duration of day and night.
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http://www.physicalgeography.net/physgeoglos/p.html
photoperiodism 1. A property of living organisms wherein biochemical, physiological, and behavioral changes occur in response to systematic variations in light and darkness, as with the seasons or day and night. 2. Any of various behavioral and physiological changes in an organism in response to the amount of daylight to which the organism is expo...
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http://www.wordinfo.info/words/index/info/view_unit/1610/17
A behavioral or physiological response to day length.
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https://academy.allaboutbirds.org/bird-academys-a-to-z-glossary-of-bird-ter
The response of plants to the length of a day and night (examples: poinsettias, cactus, night blooming flowers).
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https://www.encyclo.co.uk/local/22488
The initiation of flowering based on the relative amounts of darkness and light in a 24-hour period.
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https://www.encyclo.co.uk/local/22581
No exact match found.
