Short Answer
Most of the zooids of Obelia are feeding polyps called ____________________.
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Q9: Ctenophores capture prey by use of<br>A)nematocysts.<br>B)collenchyme.<br>C)colloblasts.<br>D)statocysts.
Q10: The _ are often bioluminescent.<br>A)anthozoans<br>B)ctenophores<br>C)hydrozoans<br>D)scyphozoans<br>Fill in the
Q11: Octocorallian corals include soft corals,sea pansies,sea pens,and
Q12: In cnidarians,extracellular digestion occurs in the<br>A)gastrovascular cavity.<br>B)gastrodermal
Q13: Radial symmetry benefits animals that actively move
Q16: The central nervous system of cnidarians includes
Q17: Digestion in cnidarians is<br>A)intracellular only.<br>B)extracellular only.<br>C)both extracellular
Q18: The body wall of a Hydra consists
Q19: Molecular evidence suggests that hydrozoans,scyphozoans,and cubozoans shared
Q28: The long thread-like structures that help to