Taroca roots were used to make alcoholic drinks in Terra Nova. Prior to "Nightfall", Hunter Boyce drank unfermented taroca root and believed that he was suffering from a hangover, only to be informed by Dr. Elisabeth Shannon that he was actually infected with a taroca parasite.
It is possible that the taroca plant has a symbiotic relationship with the tapeworm that inhabits its root, in which the worm gets a host and the taroca's seeds spread. It is speculated that the worm holds the taroca seeds and releases them when it reproduces, allowing all to exit the host in the animal's dung. In such conditions, the seeds would germinate quickly and the tapeworm's larvae would have a new plant to wait in until another animal ate the plant.