Final answer:
The statement that the host in a parasitic relationship usually dies is false. Parasites harm but typically do not kill their hosts immediately as they rely on them for completing their reproductive cycles.
Step-by-step explanation:
The statement that in a parasitic relationship between two species, the host species usually dies is false. Parasitism is a type of symbiotic relationship where a parasite lives in or on a host organism and derives nutrients at the host's expense. While the parasite benefits by obtaining nourishment and a habitat, the host is harmed because it loses vital resources necessary for its survival. However, the parasite typically does not kill the host immediately; it often relies on the host to complete its reproductive cycle before potentially spreading to another host. Therefore, while parasitism is detrimental to the host, it is not usually lethal in the short term.