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Second Exam 3 Puzzle-218

Across
The name for arthropod appendages that are branched
Complete metamorphosis is also called this (in the Arthropoda).
Structure that resorbs water from the intestine
Components of the echinoderm skeleton
Support structure in Hemichordates that is NOT homologous to the notochord
The subphylum of Chordates who's members have all the chordate features as juveniles but lose some as adults
Down
Water enters the vascular system in echinoderms through this
The type of body plan that nematodes have (think cavities).
The structure that assists ancestral chordates in feeding, but in higher chordates controls metabolism
What arthropod muscles are attached to, outer covering
Unique kidney of the Ambulacraria
The better name for the vertebrates
The missing link between arthropods and annelids
The structure with which male nematodes inseminate females.