COMPARISONS. 



Answer the following questions for Sea-anemone and for 

 Hydroicl : 



(1) Has either a radial arrangement of parts? 



(2) Are tentacles present? 



(3) Is there a body-cavity apart from the digestive 

 cavity? 



(4) How many openings to the digestive tract? 

 Read the section on Ccelenterata (pages 162 to 177). 



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