Flatworms Differ from Cnidarians in That Flatworms

question 145

Multiple Choice

Flatworms differ from cnidarians in that flatworms

• A) are radially symmetrical, whereas cnidarians are bilaterally symmetrical.
• B) have more complex internal organs than cnidarians do.
• C) are diploblastic, whereas cnidarians are triploblastic.
• D) have two openings to the digestive cavity, whereas cnidarians have only one.
• E) have an excretory system, whereas cnidarians do not.

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