Molecular data support the hypotheses that metazoans have a single origin or are _________________.
Sponges are monophyletic. They arose from a single common ancestor. All other animals comprise a sister group to the sponges.
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Q11: Flagellated canals of syconoid sponges form by
Q13: Which one of the following statements regarding
Q17: The simplest of canal systems is found
Q21: Which of the following statements about sponges
Q24: The tough protein fibers sometimes found in
Q28: Which is NOT a trait of sponges?
A)They
Q33: The largest impact that the loss of
Q36: The flagellated cells embedded in the mesohyl
Q38: Reproduction in at least some sponges is
A)asexual
Q40: In glass sponges,archaeocytes fuse their pseudopodia to
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