Placozoan evolutionary relationships to other animals are currently unclear,and different phylogenies can be created,depending on the character used to infer relatedness.Sponges have no tissues,but about 20 cell types.Tp (Trichoplax adhaerens)produces a neuropeptide almost identical to one found in cnidarians.The genome of Tp,though the smallest of any known animal,shares many features of complex eumetazoan (even human!)genomes.Use the phylogenetic trees that follow to answer the questions below.

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-Which phylogeny has been created by emphasizing the structural simplicity of placozoans?