Question : In most simple type of canal system of Porifera , which of the following ways exhibit water flows ?

Question : In most simple type of canal system of Porifera , which of

1.	Question : In most simple type of canal system of Porifera , which of the following ways exhibit water flows ?
Answer» OSTIA `to` SPONGOCOEL `to` OSCULUM `to` EXTERIOR Sponogocoel `to ` Ostia `to` Osculum `to` Exterior Osculum `to` Spongocoel `to` Ostia `to` Exterior Osculum `to` Ostia `to` Spongocoel `to` Exterior ANSWER :A