Among Protostomes, Which Morphological Trait Has Shown the Most Variation

question 25

Multiple Choice

Among protostomes, which morphological trait has shown the most variation?

• A) type of symmetry (bilateral vs. radial vs. none)
• B) type of body cavity (coelom vs. pseudocoelom vs. no coelom)
• C) number of embryonic tissue types (diploblasty vs. triploblasty)
• D) type of development (mouth first vs. anus first)

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