To prevent heartworm, cats and dogs should receive appropria…

Tо prevent heаrtwоrm, cаts аnd dоgs should receive appropriate prophylactic medication.  What is the proper name  of the parasite responsible for heartworm? [heartworm] a.  Schistosoma mansoni b.  Dirofilaria immitis c.  Arthrobotrys d.  Echinococcus granulosarum To which major group of helminths does the heartworm parasite belong?  [majorgroup] a.  Annelida b.  Cestodes c.  Nematodes d.  Trematodes How is this parasite transmitted?  [transmission] a.  fleas b.  mosquitoes c.  biting flies d.  ticks