What is the function of the choanocytes in sponges?

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:The common name for members of the phylum that sponges belong to is Porifera. Sponges are generally marine animals and are typically found in marine environments. Choanocytes, also known as collar cells, line the spongocoel and canals in sponges and play a role in water transport. Digestion is intracellular. The body is supported by a skeleton made up of spicules or spongin fibres. Sexes are not separate (hermaphrodite), i.e., eggs and sperms are produced by the same individual. Sponges reproduce asexually by frag