A) Coelenterata
B) Porifera
C) Mollusca
D) Protozoa
Correct Answer: B
Solution :
[b] In Porifera (sponges), bodies are asymetrical. Body lacks tissue or organs, but from a meshwork of cells surrounding channels that open to the outside through pores, and that expand into internal cavities lined with food filtering flagellated cells (choanocytes).You need to login to perform this action.
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