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Both invertebrates and vertebrates, with the exception of the _____, have a nervous system. lancelet reptile mollusk sponge

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Answer:

the answer is sponge

Step-by-step explanation:

User Lavavrik
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sponge

Like reptiles and mollusks, lancelets is the group of chordates that has a notochord and includes separate males and females. Lancelet exhibits the four basic characteristics of phylum Chordata. It has a dorsal nerve, a notochord, a post annul tail, and pharyngiall gill slit.
User Coolwater
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