Botany - Animal Kingdom Question with Solution | TestHub

The unique characteristic of phylum Annelida is the presence of nephridia. Nephridia are organs which osmoregulation and excretion. Hermaphrodites are animals in which the male, as well as female reproductive organ, is present in the same organism. This feature is seen in members of Phylum Annelida like an earthworm, but it is also seen in members of other phyla, like that of Phylum Echinodermata. Thus, it is not a feature which is unique to Phylum Annelida.