In the most simple type of canal system of Porifera, which of the following ways exhibit water flow?A. Ostia `rarr` Spongocoel `rarr` Osculum `rarr` ExteriorB. Spongocoel `rarr` Ostia `rarr` Osculum `rarr` ExteriorC. Osculum `rarr` Spongocol `rarr` Ostia `rarr` ExteriorD. Osculum `rarr` Ostia `rarr` Spongocoel `rarr` Exterior

In the most simple type of canal system of Porifera, which of the foll

1.	In the most simple type of canal system of Porifera, which of the following ways exhibit water flow?A. Ostia `rarr` Spongocoel `rarr` Osculum `rarr` ExteriorB. Spongocoel `rarr` Ostia `rarr` Osculum `rarr` ExteriorC. Osculum `rarr` Spongocol `rarr` Ostia `rarr` ExteriorD. Osculum `rarr` Ostia `rarr` Spongocoel `rarr` Exterior
Answer» Correct Answer - A The central body cavity of sponges is called spongocoel. Their body is porus. The inhalent pores are called ostia and exhalent pores are known as oscula. The body of a sponge is organised in such manner as to form a complex system of pores and canals. This system is called canal sydstem. Water flows in through ostia to spongocoel and comes out to exterior via osculum.