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Body having meshwork of cells , internal cavities lined by food filtering flagellated cells , having pores in their body wall and the only phylum without nerve cells 

Option: 1

Mollusa 


Option: 2

Protozoa 


Option: 3

Coelentrata 


Option: 4

Porifera 


Answers (1)

best_answer

 

Phylum porifera -

Most primitive multicellular organism having pores in their body walls.(Known as ostia).They are mostly marine, few freshwater.The only phylum without nerves cells.

- wherein

Spongilla,Sycon,Euspongia.

 

 

 

Posted by

Anam Khan

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