Allow materials to enter and leave the sponge
Sponges
shatif
ostium
Dermal ostia in zoology refer to small pores in the body wall of sponges that allow water to enter their internal canal system for feeding and gas exchange. These pores are essential for maintaining water flow through the sponge's body for nutrient uptake and waste removal.
The holes in sponges are called pores. These pores help sponges to filter water and capture food particles for nourishment.
The phylum's name hints to this:Pori= pores or holes and Fera= to bear... So sponges bear holes or pores which is an important characteristic of sponges.
Phylum Porifera (latin for 'pore-bearing). Commonly known as sponges.
FILTER
They are both pores
the sponges
Sponges have a variety of defenses against predators, including producing toxins, secreting a distasteful substance, releasing mucous to trap predators, and being able to quickly regenerate if damaged. Some sponges can also contract or close their pores to protect themselves.
We just studied this a few months back, and I believe that the function of a sponges pores is to take in water and filter it for food. When they reproduce I believe it also releases the sperm or egg out of there and another sponge can catch it and have babies. Again, the function of sponges pores is to take all the bacteria and inpurities of the water and that is how it gets it's food.