Biological rhythms in animals isolated from light and dark cues ________.
A) continue to have cycles of exactly 24 hours' duration
B) continue to have cycles of approximately 24 hours' duration; some more rapid, some slower
C) synchronise activity with whatever lighting cycle is imposed on them
D) cease having any rhythms

Question

Quizplus · Accepted Answer

Animals isolated from light and dark cues will still have biological rhythms, but these may not necessarily be exactly 24 hours in duration. Some may be more rapid or slower depending on the animal and its environment.

Biological Rhythms in Animals Isolated from Light and Dark Cues