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- Tue Mar 13, 2018 9:50 pm
- Forum: Zoology Discussion
- Topic: hi guys I need your help
- Replies: 0
- Views: 9568
I was tested today and there was a question: which cell layers are in Porifera ? Ive circled the one that says : 3 cell layers (epidermis endodermis and mesohyl) now I've been told that mesohyl isn't a cell layer... so my questions are : how can I convince them to accept my answer? because I now see...