Fact 1: Adult worms go through a major transformation to develop reproductive organs. Fact 2: Marine annelid worms have larvae called trochophores that swim about by means of cilia. Given the two facts above, marine annelids can make a swimming larvae called what?
Options: a). barnacles b). survive c). graptolites d). epidermal e). Something to move f). a trochophore g). fertile h). permineralization
Answer:
f).