Question

Diff b/w ostea and osculum.

Answer 1

The difference between ostia and osculum is that one type of pore takes in water while the other port releases water. Ostia are small pores that take in water on sponges. They draw the water into their tissue for nutrients and food. The ostia then passes the water through canals where cells filter it and continue to absorb water. Osculum is the larger openings of a sponge where the water that has been absorbed by the sponge is then released.