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2 years ago

What is the difference between Ostia and osculum?

2 answers:

8 0

Osculum: A large opening in a sponge through water flows out of the sponge. the sponge may have more than one Osculum.

Ostia: A series of tiny pores all over the body of a sponge that let water into the sponge. One of these is called Ostium.

oee [108]2 years ago

3 0

Large opening in a sponge through which water flows out of the sponge. There can be more than one osculum in them while ostia are a series of tiny pores which are present all over the body of a sponge.

Further explanation

Sponge

They are multicellular, heterotrophic organisms which belongs to phylum porifera. There are three types of sponges which are syconoid, asconoid, and leuconoid.

Osculum

It is an excretory structure in the living sponge, a huge opening to the outside through which flow of water exits in the wake of going through the spongocoel. Waste material diffuses into the water and the water is siphoned through the osculum. Sponge siphon pumps huge volumes of water; all in all, a volume of water equivalent to the wipe's body size is siphoned at regular intervals. The size of the osculum is controlled by contractile myocytes. Its size is one of the elements which decides the measure of water moving through the sponge. It tends to be shut totally in light of overabundance residue in the water.

Ostia

They are present in the form of pores on the body of sponge and a single pore is called osteum.

Answer details

Subject: Biology

Level: High school

Key words

Sponge
Osculum
Ostia

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