Examlex
The variable F is
Photoperiodic Response
The biological reaction of organisms to the length of day or night, affecting behaviors such as flowering in plants and mating in animals.
Vernalization
Stimulation of flowering in spring by long exposure to low temperature in winter.
Statoliths
Small granules, often made of calcium carbonate, found within certain cells associated with the detection of gravitational orientation in plants and some invertebrate animals.
Gravity-sensing Cells
Specialized cells in organisms that detect and respond to gravity, guiding growth and movement direction.
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