The Common Ancestor of the Protostomes Had a Coelom

question 24

Multiple Choice

The common ancestor of the protostomes had a coelom. What does this suggest?

• A) All lophotrochozoans have a coelom.
• B) There are no pseudocoelomates within the protostomes.
• C) There are no acoelomates within the protostomes.
• D) The body cavity evolved before the lophophore.

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