Body having meshwork of cells, internal cavities lined with food filtering flagellated cells and indirect development are the characteristics of phylum :
A
Protozoa
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B
Coelenterata
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C
Porifera
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D
Mollusca
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Solution
The correct option is C Porifera Porifera - Members of this phylum have cellular level of organisation - with meshwork of cells. They have a water transport or canal system. Water enters through the numerous ostium in the cavity and exit by a central pore known as osculum. Choanocytes are the flagellated cells which line the spongocoel. It helps to set up water current and helps in intake of food.