Question

what are gemmules where are they located what purpose do they serve

Answer 1

Gemmules are cluster of embryonic cells useful for the development of sponge.

They are located as internal buds found in sponges.

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Answer 2

Hi friend,

gemmules are asexual bud form from tough coat of embryonic cells 
they are located in  sponges.
they provide resistance against cold or hot extreme conditions