CH. 33/34

Question 1

under lophotrochozoa; includes foot, mantle, and visceral mass;
bilateral symmetry, have true coelom

Answer 1

mollusk, or phylum mollusca

Question 2

under ecdysozoa; has jointed appendages, exoskeleton made up of protein and chitin;
bilateral symmetry

Answer 2

arthropods, or phylum arthropoda

Question 3

Pancrustaceans are included in ___

Answer 3

arthropoda

Question 4

When blue crab sheds shell, their skin is ___ to water

Answer 4

permeable

Question 5

deuterostomes, water vascular system with tube feet; strong, and feed on mollusks; bilateral symmetry, 3 tissue layers, completed digestive system;
closest relatives to chordates

Answer 5

echinoderms, or phylum echinodermata

Question 6

notochord runs along dorsal side; dorsal hollow nerve chord, pharyngeal slits

Answer 6

chordates

Question 7

not vertebrates in chordates; bilateral symmetry, complete digestive system, deuterostome, has true coelom

Answer 7

lancelets—> cephalochordata