Photoperiodicity

Definition (http://medical-dictionary.thefreedictionary.com/photoperiodicity)

The rhythm of certain biological phenomena such as hibernation and reproductive activity which are determined by the regularly recurring changes in light and dark caused by the annual passage of the earth about the sun. (The Free Dictionary)

Preferred Units: N/A

Scope Note:
N/A

This term is used for the following terms: 
Daylength
Photoperiod

Approved Date
12-Aug-2013

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