Biological rhythms Flashcards
What is the length of a circadian rhythm?
24 hours (day & night cycle)
What might the circadian rhythm be linked to or triggered by?
Triggered by light availability.
What are some examples of circadian rhythms?
Sleep/wake cycle, Body temperature.
what is the length or a circannual rhythm?
365 days
What is the circannual rhythm linked to or triggered by?
Linked to the seasons. Summer, winter, spring, autumn
What are some examples of circannual rhythms?
Leaves falling off trees in autumn. Bears hibernating.
What is the length of circatidal rhythms?
12 hours (approx.)
What is the circatidal rhythm linked to or triggered by?
high tides or low tides
What are some examples of circatidal rhythms?
Tide out > desiccation occurs (organisms dry out)
Tide in > Reproduction and feeding occurs
What is the length of a circalunar rhythm?
29.5 days (about a month)
What is the circalunar rhythm linked to or triggered by?
The orbit of the moon around the sun.
