How did Karl von Frisch show that honeybees can distinguish many odors and colors?

Karl von Frisch demonstrated that honeybees possess sophisticated sensory capabilities through behavioral training experiments. In 1919, he proved that bees could be trained to distinguish between various odors and tastes, showing that they utilize these chemical cues to navigate their environment.1

Regarding their visual abilities, von Frisch’s work laid the foundation for understanding how bees perceive their surroundings. While his later research famously established that bees use the Sun and patterns of polarized light for navigation, the biological basis for their color vision involves a trichromatic system. Honeybees possess three types of photopigments in their ommatidia with maximum sensitivities in the ultraviolet, blue, and green regions of the spectrum. This physiological structure allows them to accurately distinguish between different flower colors, a critical adaptation for their foraging behavior.12