Question

which of the following animals do not have heart? jellyfish, whale, dolphin?

Answer 1

Jellyfish do not have heart
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Answer 2

A jellyfish  no ears or eyes or nose and no brain or heart They do not even have a head. Their body is almost totally made of water and is soft having no bones at all. jellyfish  are invertebrate animals because they donot have a spine or backbone
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