The Presence of What Features(s)would Exclude the Cnidarians and Ctenophores

question 42

Multiple Choice

The presence of what features(s) would exclude the cnidarians and ctenophores as possibilities for the identity of a newly discovered animal?

• A)Nervous tissue-it is absent in cnidarians and ctenophores.
• B)A mouth that develops from the blastopore-in cnidarians and ctenophore the blastopore becomes the anus.
• C)A body constructed from three tissue layers-in cnidarians and ctenophores the body wall is constructed from two tissue layers.
• D)All of the above are characteristics that are absent in cnidarians and ctenophores.

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