Phylum Sipuncula
Response
Many sipinculans live in permanent burrows or rock crevices for protection. When harassed by predators, the worm can withdraw the anterior part of the body for protection in the trunk and is called the introvert.
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Biology 11 Block F
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spiny
February 5, 2007 at 9:27 AM
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What are Sipunculans?
Feeding and Digestion
Respiration and circulation
Excretion
Reproduction
Movement
Response
Comparison to other phyla
References
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spiny
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