trocophore (free-living larva), lophophore (harsh-shaped crown of ciliated
tentacles surrounding mouth for filter feeding) - ANSWER Lophotrochozoans
anus first from blastopore; radial cleavage, indeterminate, forms indirectly from
archenteron; chordates, echinoderms - ANSWER Deuterostomes
organ systems, efficient, flexible - ANSWER evolution of segmentation
no tissues, parazoa, no symmetry, complex multicellularity, dedifferentiate and
dedifferentiate (sponges) - ANSWER Porifera
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