an animal which has nervous system but no brain?why it don't have brain only it has nervous system?
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However, even sponges, unicellular animals, and non-animals such as slime molds have cell-to-cell signalling mechanisms that are precursors to those of neurons. In radially symmetric animals such as the jellyfish and hydra, the nervous system consists of a nerve net, a diffuse network of isolated cells.
merllyn:
please mark as brainliest
Sponges are multicellular organisms of phylum Porifera
The distinction is in differentiation of cells
thank u
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Sponge (Phylum Porifera) is a multicellular organism that doesn't have brain but have some kind of central nervous system.
but why it has so?
Didn't you get it in brainliest answer !
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