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NZQA Plant and animal behaviour > Biological rhythms > Flashcards

Flashcards in Biological rhythms Deck (11)
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1

What is the length of a circadian rhythm?

24 hours (day & night cycle)

2

What might the circadian rhythm be linked to or triggered by?

Triggered by light availability.

3

What are some examples of circadian rhythms?

Sleep/wake cycle, Body temperature.

4

what is the length or a circannual rhythm?

365 days

5

What is the circannual rhythm linked to or triggered by?

Linked to the seasons. Summer, winter, spring, autumn

6

What are some examples of circannual rhythms?

Leaves falling off trees in autumn. Bears hibernating.

7

What is the length of circatidal rhythms?

12 hours (approx.)

8

What is the circatidal rhythm linked to or triggered by?

high tides or low tides

9

What are some examples of circatidal rhythms?

Tide out > desiccation occurs (organisms dry out)
Tide in > Reproduction and feeding occurs

10

What is the length of a circalunar rhythm?

29.5 days (about a month)

11

What is the circalunar rhythm linked to or triggered by?

The orbit of the moon around the sun.