CBSE Class 10 Answered

functions of theeth-     gripping cutting chewing tearing n crushing of food,  teth r also helpful in speach

functions of tongue-perceives taste of food,  helps in ingestion swallowing of food n brings food under teeth for mastication,it helps in speach

functions of saLIVA   -moistens foodn provide liquid base for proper mastication n chewing of food,it has salivary amylase to digest carbohydrate,it has lysozymes to prevent growth of microbes ,it moistens buccopharyngeal cavity n its organs as tongue lips etc