In sponges, like Scypha, there are some cells that have an intracellular pore.
2.
Amphiblastula is the larva of scypha.
3.
They are present in the Leucosolenia ( a asconoid sponge ) at the body wall through which water enters the body or they are present in Scypha ( a syconoid sponge ) as a connection between incurrent canal and radial canal.
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