Adult worms go through a major transformation to develop reproductive organs.
Marine annelid worms have larvae called trochophores that swim about by means of cilia.
Marine annelids go through a major transformation to be able to make larvae called trochophores that swim about by means of cilia.
Marine annelids can make a swimming larvae called what?

A) barnacles
B) survive
C) graptolites
D) epidermal
E) Something to move
F) a trochophore
G) fertile
H) permineralization