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velikii [3]
3 years ago
9

what type of skeleton for sponges, cnidarias, roundworms, annelids, mollusks, arthropods, echinoderms, and vertebrates.

Biology
2 answers:
goldfiish [28.3K]3 years ago
7 0
Endoskelton jsgsgwunwbdvdywhwnnddj
Fofino [41]3 years ago
3 0

Answer:

Endoskeleton

Explanation:

An internal skeleton is called an endoskeleton, which is what vertebrates have.  A sponge endoskeleton consists of short, sharp rods called spicules

Spicules are made of silica, calcium carbonate, etc.

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