Which location corresponds to tannin perception according to the material?

• A. Back of the tongue
• B. Tip of the tongue
• C. Near the back, roof of the mouth and on the teeth
• D. Sides of the tongue

Answer: (C)

Tannin perception is an astringent, tactile sensation in the mouth, not a simple taste. This puckering and drying effect comes from tannins interacting with saliva and proteins on the mouth’s mucous surfaces, so you feel it most where the mouth is in contact with those surfaces—the back of the tongue, the roof of the mouth (soft and hard palate), and even on the teeth. That combination of areas reflects where tannins leave the strongest physical impression, which is why the described location—near the back, the roof of the mouth, and on the teeth—is the best fit. The tip or sides of the tongue are more associated with basic taste sensations, while tannins produce that distinct astringent mouthfeel rather than a specific taste there.