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Well they both produce by budding like a flower would do and they both have the ability to move but choose to spend most of their time in one place. that is all i know and i am doing a project on that.. i am goin to get a bad grade

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12y ago
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11y ago

they lay eggs like reptiles and scorpions.

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9y ago

They are all invertebrates (have no backbone).

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13y ago

They are all types of invertebrates.

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11y ago

they have no blood or organs :)

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Q: What have sponges cnidarians mollusks and echinoderms have in common?
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