question_answer 23)

  The organ of corti is a structure present in (a) external ear               (b) middle ear                     (c) semi circular canal        (d) cochlea

Answer:

                  (d) The organ of Corti is a structure present in cochlea. Cochlea bears the most important channel/canal called scala media, which has an upper membrane, the Reissner'' membrane and a lower membrane basilar membrane. Organ of corti are present Ot the sensory ridge olf basilar membrane.