Which cranial nerve is responsible for transmitting taste sensations from the back third of the tongue?

Explanation

Taste sensations from the posterior one-third of the tongue are carried by the glossopharyngeal nerve (cranial nerve IX). The facial nerve (VII) transmits taste from the anterior two-thirds, the trigeminal nerve (V) handles general sensation, and the vagus nerve (X) carries taste from the epiglottis region.