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How does the sponge keep water flowing through its ostia and out through the osculum?
Wiki User
∙ 10y ago
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.
Wiki User
∙ 10y ago
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What does a sponge have instead of a mouth?
osculum and ostia are the holes in the sponge that can be used as mouths
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 pores of a sponge called?
Small pores of sponges are called ostia through which water enters while a large pore through which water exits is called osculum .
What is the body covering of a sponge?
Ostia
What are sponge pores called?
ostium ostia
What are the holes called in a sponge?
I think they're called Ostia.
What kinds of tissues does sea sponge have?
The body of a sponge is a collection of a few different types of cells loosely arranged in a gelatinous matrix called a 'mesohyl', mesoglea or mesenchyme. This mesohyl is the connective tissue of a sponge body and it is supported by the skeletal elements. The skeletal elements of sponges are variable and important in taxonomy. Throughout this body run canals through which water flows, there is considerable variation in the complexity of these canals. The canals have openings to the outside which are called pores, where the water enters the sponge system these pores are usually small and are called 'ostia' and where the water leaves the sponge system the pores are larger, often singular and are called 'oscula' (singular osculum). Many if not most of these canals are lined with special flagellated cells called 'choanocytes'. These choanocytes keep the water flowing through the canals in the correct direction by beating their flagellum, they are also important in trapping food items.
Where does water enter a sponge through?
tiny "whips" on the cells inside a sponge draw water in through the pores of thesponge. Food is then removed from the water before it leaves through the opening at the top of the sponge .
What are the main characteristic of a sponges?
My science teacher said that it is sessile and it reproduces anisexually and some other way
What are the characteristics of porifera?
Porifera are pore bearing animals . Pores include ostia and osculum . they possess choanocytes or collard cells .
How does a sponge absorb water?
A sea sponge absorbs water through numerous minute, dermal pores on its body surface known as ostia.
