Choose the incorrect statement.

Not all the papillae of the tongue bear taste buds. 

Filiform papillae do not contain taste buds. Instead, filiform papillae have a rough and conical structure, and they play a role in providing friction to help in the manipulation of food. Their abrasive surface helps in gripping and moving food during chewing and swallowing. So, while they aren't involved in taste perception, filiform papillae serve a functional purpose in the mechanical aspects of food processing in the mouth.