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Invertebrates Quiz

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A	B
What percentage of all living and fossil animals are invertebrates?	90%
Facts about invertebrates:	Soft-bodied; lack internal skeleton for muscle attachment; some have a hard shell
What are known as the "filters of the ocean"?	Porifera
Do sponges have any kinds of bodily systems?	NO!
Cnidaria	coral, jellyfish, and anemones
Mollusca	squid and octopi
Anthropod	crab, shrimp, and barnacles
Echinodermata	sea stars, urchins

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