Osphradium in Pila globosa is a
Thermoreceptor
Photoreceptor
Chemoreceptor
Tangoreceptor
In Pila globosa, an aquatic snail, the osphradium is a specialized sensory organ that acts as a chemoreceptor. It is responsible for detecting chemical stimuli in the surrounding environment, particularly dissolved chemicals in the water. The osphradium helps the snail to sense and respond to various chemical cues, such as food sources, predators, or potential mates. Hence, the correct answer is option 3.