How Can You Distinguish an Ectoproct from a Hydroid

question 28

Multiple Choice

How can you distinguish an ectoproct from a hydroid?

• A)The hydroid colony is very small,perhaps a few millimeters long,while the ectoproct is centimeters long
• B)The hydroid has the anus within the tentacular crown and the ectoproct has the anus outside the crown
• C)The hydroid lacks any complex digestive gut including any anus
• D)The hydroid has more complex musculature and innervation
• E)Only hydroids form moss-like colonies

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