Final answer:
True, the lingual tonsil is located at the base of the tongue and consists of lymphoid tissue important for immune response.
Step-by-step explanation:
The statement that the lingual tonsil is found on the posterior surface of the root of the tongue is True. The lingual tonsils are located at the base of the tongue and consists of lymphoid tissue that plays a role in trapping and destroying pathogens entering the body through the oral or nasal cavities. This is in contrast to the pharyngeal tonsil, which is located on the roof of the posterior superior wall of the nasopharynx, and the palatine tonsils which are found on each side of the pharynx in the area of the fauces.