If a plant were placed in continual darkness, it would continue to open and close its stomata at approximately the same time each day. This phenomenon is governed by:
A) annual rhythms.
B) floral clocks.
C) transpiration.
D) temporal mechanisms.
E) circadian rhythms.

Question

Quizplus · Accepted Answer

This phenomenon is governed by circadian rhythms, which are internal biological clocks that operate on a roughly 24-hour cycle, allowing organisms to anticipate and prepare for changes in the environment, such as the day-night cycle, even in the absence of external cues like sunlight.

If a Plant Were Placed in Continual Darkness, It Would