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Asked by Shreya Singh on May 09, 2024

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Differentiate between circadian rhythms and photoperiodism. Give examples of each. What regulates these responses?

Circadian Rhythms

Biological processes that display an endogenous, entrainable oscillation of about 24 hours, influencing sleep patterns, feeding behavior, hormone production, and other bodily functions.

Photoperiodism

The physiological response of organisms to the length of day or night, affecting behaviors such as flowering in plants and mating in animals.

Regulates

To control or maintain the rate or speed of a process or system to make it operate correctly.

  • Understand the concept of circadian rhythms and photoperiodism and their roles in plant physiological processes.
  • Articulate the mechanisms of flowering induction including the roles of light and darkness.
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Devin Stokes-HowellMay 12, 2024
Final Answer :
Concepts to Consider: Photoperiodism is any response to changing lengths of day and night. These responses are tied to phytochrome, resulting in influences on timing of flowering, seed germination, leaf abscission, and shade avoidance. Circadian rhythms are those based on a 24-hour cycle and may be cued to phytochromes as well as cryptochormes, influencing sleep movements, stomatal opening and closing, and opening and closing of flowers.

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