Question

The flagellated cells that line the internal cavity of a sponge and help water flow through the ostia are known as _____

Answer 1

Choanocytes are the flagellated cells that line the internal cavity of a sponge and help water flow through the ostia.

Step-by-step explanation:

The flagellated cells that line the internal cavity of a sponge and help water flow through the ostia are known as choanocytes. Choanocytes are specialized cells found in sponges that have a flagellum surrounded by a collar. The beating of the flagella from choanocytes creates a water current and traps food particles, allowing water to flow through the sponge.