Biology Practice Problems Echinoderms Practice Problems Solution: An evolutionary advance that first appeared in ech...

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Solution: An evolutionary advance that first appeared in echinoderms wasa. radial symmetryb. one-way digestive systemc. external digestiond. endoskeleton

Problem

An evolutionary advance that first appeared in echinoderms was

a. radial symmetry

b. one-way digestive system

c. external digestion

d. endoskeleton