Question

What are pinacocytes and choanocytes in sponges?

Answer 1

pinacocytes line the outside of the sponge, choanocytes tend to line certain inner portions of the sponge body that surround the mesohyl. The structure of a choanocyte is critical to its function, which is to generate a water current through the sponge and to trap and ingest food particles by phagocytosis

Answer 2

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Pinacocytes sponges:

Pinacocytes are flat cells found on the outermost layer (Pinacoderm) of a sponge (phylum Porifera).

Choanocytes sponges

It is an flagellated cells in sponges that maintain a flow of water through the body. A collar of protoplasm surrounds the base of the flagellum Also called: collar cell.

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What is sponges ?

The sponges or poriferansare animals of the phylum Porifera. They are primitive, sessile, mostly marine, waterdwelling filter feeders that pump water through their matrix to filter out particulates of food matter. Sponges are among the simplest of animals.

How many type of sponges are there ?

Although most of the approximately 5,000–10,000 known species of sponges feed on bacteria and other microscopic food in the water.