Phylogeny of some lophotrochozoan worms

1
Phylogeny of some lophotrochozoan worms
Annelida
Platyhelminthes
Sibloglinidae
Polychaeta
Sipuncula
Nemertea
lt nutrition source
gut shape gt feeding structure gt coelomic cells gt
lt appendages lt body layout lt hardened
chitinous structures
body cavity gt excretory structure gt extracellular
covering gt blood-vascular system gt
lt fluid-filled cavity lt prey capture device lt
blood-vascular system
Directions gt 1. Fill in the state next to each
name to identify the shared, derived character
that evolved along branches leading to each
clade. Base your answers only on the
phylogenetic hypothesis and organisms shown.
Note that characters could change or reverse on
branches higher in the cladeyou are recording
the first origins of character changes.
digestive system gt
body symmetry gt excretory structure gt tissue
layers gt nervous system gt larval type (?) gt