Which statement concerning biological clocks is false?
A) Innate circadian rhythms are generally about 24 hours in length.
B) Circadian rhythms occur with or without external stimuli.
C) Biological clocks are strongly influenced by external temperatures.
D) Movement of plants long distances very quickly induces a kind of plant "jet lag."

Question

Quizplus · Accepted Answer

Biological clocks are influenced by external cues, such as light and food availability, but not external temperatures. Plants, for example, can use temperature changes to prepare for seasonal changes, but their internal clock is still based on other cues such as light. Therefore, the statement that biological clocks are strongly influenced by external temperatures is false.

Which Statement Concerning Biological Clocks Is False