Sponges are invertebrate animals that usually have no body symmetry & never have tissues or organs & it has different kinds of cells & structures for different functions.
The sharp structure found in a sponge's body is called spicules. These spicules provide structural support and protection for the sponge.
The large opening at the top of the sponge, where water leaves, is called the osculum. It is responsible for expelling the water and waste products from the sponge's body.
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Metamorphosis in sponges refers to the process where a free-swimming larva settles on a substrate and undergoes transformation into the adult sponge. During metamorphosis, the larva attaches itself to a surface, loses its cilia, and undergoes structural changes to develop into the adult sponge body plan. This process is essential for the larvae to transition from a planktonic stage to a sessile adult form.
osculum and ostia are the holes in the sponge that can be used as mouths
A sponge doesn't have a body temperature, because a sponge doesn't have a body. But how warm or cold you put the sponge under water or any liquid is the temperature of the sponge.
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The sponge uses the choanocytes to move a steady current through its body.
Spongocoel, literally 'sponge cavity'.
A sponge.
Ostia
The body of a sponge is covered in tiny openings called pores. These pores allow water to flow in and out of the sponge, which helps the sponge filter out food particles and oxygen from the surrounding water.
A flagellated cell that sweeps water through a sponge's body is called a choanocyte. Choanocytes have a flagellum that creates a current to bring water through the sponge's pores, allowing for filter feeding and gas exchange to occur within the sponge's body.
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elastic fibers
Through the holes in their body.
A golf course