Mention the levels of organization of the following animals-
  1. Pheretima
  2. fasciola
  3. spongilla
  4. ​obelia

Dear student,            
Please find below the solution to the asked query         
                                                   
1. Organ level
2. Organ level
3. Cellular level
4. Tissue level​
      

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Hi there I'm interested in your post about the other one still available for the rest of the week
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