What is the function of ocelli in bees?

Ocelli, often referred to as simple eyes, are located on the tops of bees' heads and play a crucial role in their ability to perceive light and dark. These photoreceptive organs are sensitive to changes in light intensity, aiding in the regulation of important behaviors such as navigation and flight orientation. While compound eyes provide bees with the ability to see detailed images and colors, ocelli help with detecting the ambient light levels in the environment. This allows bees to maintain stability and orientation during flight, especially when they are in motion.

Understanding that ocelli serve this specific function clarifies why light/dark perception is the most appropriate answer, as it highlights the bees' adaptation for survival and effective navigation in various lighting conditions. Other functions, such as temperature regulation, flight stabilization, and food detection, are related to different sensory mechanisms and are not directly associated with the role of ocelli.