****** reproduction started in prokayotes. Helminths are the oldest ****** animals. Helminths is a name for all (macro)parasitic worms: ringed worms, flatworms, roundworms and thorny-headed worms. Most are hermaphroditic, roundworms have their sexes differentiated.

Novel "De rimpels van Esther Ornstein - De geschiedenis van een verzuim" ("The wrinkles of Esther Ornstein - The history of a neglect", 1959, Simon Vestdijk), chapter 3-1

Collection "Inmost [2]"