Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
3,919,264,406 visitors served.
forum Join the Word of the Day Mailing List For webmasters
?
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

photoperiodism

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.01 sec.
photoperiodism /pho·to·pe·ri·od·ism/ (fo″to-pēr´e-ah-dizm) the physiologic and behavioral reactions brought about in organisms by changes in the duration of daylight and darkness.
pho·to·pe·ri·od·ism (ft-pîr--dzm) or pho·to·pe·ri·o·dic·i·ty (-pîr--ds-t)
n.
The response of an organism to changes in its photoperiod, especially as indicated by vital processes.

photoperiodism [fo″to-pēr´e-o-dizm]
the physiologic and behavioral reactions brought about in organisms by changes in the duration of daylight and darkness.

photoperiodism
the physiological and behavioral reactions brought about in organisms by changes in the duration of daylight and darkness, e.g. in reproductive activity, shedding of hair. Birds respond to longer daylight hours by increased sexual activity. Use is made of the phenomenon by using artificial light to stimulate egg production.


Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content.
?Page tools
Printer friendly
Cite / link
Feedback
Add definition
Mentioned in?  References in periodicals archive?   Medical browser?   Full browser?
No references found
 
The author explains the radiation flux in the free atmosphere and biosphere and concentrates on such processes as photosynthesis and photoperiodism.
This photoperiodism, as it is technically known, is used by professional growers for a wide variety of plants to force them to perform at a time of the year when they would not naturally do so.
 
 
 
Medical Dictionary
?

Terms of Use | Privacy policy | Feedback | Advertise with Us | Copyright © 2012 Farlex, Inc.
Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.