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1. To what Phylum and Class do the skeletons of these organism belong?

2. With respect to their internal canals, what body type do these organism have?

                      Answers

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1. Phylum Porifera; Class Demospongiae  (the organisms are bath sponges)

2. leucon (leuconoid)