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Lophotrochozoans

Lophotrochozoans

31. Invertebrates / Lophotrochozoans / Problem 3

Annelids have a _ digestive system, whereas platyhelminthes have a _ digestive system.

A

sac-like; tube-like

B

tube-like; sac-like

C

tube-like; rudimentary

D

most advance; simple

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