When an adult fruit file emerges from its pupal case, it does so during a short interval around dawn when the atmosphere is cool and moist, allowing the flies to expand their wings with a minimal loss of water. The procedure takes several hours to complete. The fruit fly is best exemplifying which of the following advantages of clock-controlled behavior?
A) anticipation of environmental change
B) continuous measurement of time
C) entrainment by environmental cycles
D) synchronization of behavior with an event that cannot be sensed directly

Question

Quizplus · Accepted Answer

The fruit fly's emergence around dawn demonstrates anticipation of environmental change, as it takes advantage of the cool and moist conditions to expand its wings with minimal water loss.

When an Adult Fruit File Emerges from Its Pupal Case