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  3. Unit 5. biological diversity
  4. Invertebrates
  5. Phylum porifera

28.1 Phylum porifera  (Page 5/19)

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5 / 19  The large central opening in the Parazoan body is called the:
A  gemmule
B  spicule
C  ostia
D  osculum
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Practice MCQ 2 FlashCards 2 Key Terms 12

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Source:  OpenStax, Biology. OpenStax CNX. Feb 29, 2016 Download for free at http://cnx.org/content/col11448/1.10
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