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How does the sponge keep water flowing through its ostia and out through the osculum?

The sponge works like a chimney. Water rushes in from beneath through ostia and comes out ffrom osculum. This action is continuously controlled by wholly or partially closing the osculum and ostia and varying the beat of the flagella, and the pores may shut if there is a lot of sand in the water before it could block the system.


What is the order in which a drop of ink would pass by the structure in a sponge?

ostia -spongocoel-osculum


Difference bw ostia and osculum?

ostia is the inlet into the sponge and osculum is the outlet through which the entered water etc. moves out


What are the characteristics of porifera?

Porifera are pore bearing animals . Pores include ostia and osculum . they possess choanocytes or collard cells .


What does a sponge have instead of a mouth?

osculum and ostia are the holes in the sponge that can be used as mouths


When was Osculum Obscenum created?

Osculum Obscenum was created on 1993-10-12.


What is the large opening at the top of the sponge?

Top opening of a sponge is called osculum . it is used to expel water out .


What type of animal has cells an osculum and spicules?

Sponges have collar cells, osculum, and spicules.


What kind of animals have collar cells an osculum an spicules?

Sponges have collar cells, osculum, and spicules.


What type of animals has collar cells and osculum and spicules?

Sponges have collar cells, osculum, and spicules.


Where is Ostia?

Ostia may refer to: * Ostia Antica, a township and port of ancient Rome * Ostia(town), a modern township (also called Ostia Lido or Lido di Ostia) on the Tyrrhenian Sea coast, near Rome, Italy. Usually, when modern Roman people say Ostia they refer to the modern town, not the nearby archaeological site. It can also refer to either of two modern districts of Rome: * Ostia(modern district),roughly co-terminous with Ostia (town) * Ostia Antica(district) (originally known as Gregoriopolis)


Where is Italy is Ostia?

Ostia is just a few kilometers from Rome.