Which Statement About the Internal Biological Clock Is Not True

Multiple Choice

Which statement about the internal biological clock is not true:

A) is known as a circadian rhythm.
B) is related to the opening and closing of stomata.
C) includes the sleep movements observed in some plants, such as beans.
D) may involve both phytochrome and cryptochrome.
E) disappears abruptly if it is not reset by the rising and setting sun.