<span>Roundworms - Phylum Nematoda Characteristics: 1. Separate sexes 2. Larvae = miniature adults Eggs
infective for humans-It is dioecious with sexual dimorphism; that is,
the male, and female worms look distinctly different, the male being
smaller with a curled tail. pinworm or whipworm Larvae infective for
human-the parasitic worm is called heartworm, because the adult stage is
often in the animal host's heart, where it can kill its host through
congestive heart failure.</span>
