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Invertebrate-
Lesson one-Animals without backbones
Question | Answer |
---|---|
An animal without a backbone | invertebrate |
A simple invertebrate that has a hollow body with a single opening and lives in water | sponge |
An invertebrate with armlike parts and stinging cells on the ends of tentacles | cnidarian |
An invertebrate that has a soft body and a shell | mollusk |
A spiny-skinned invertebrate | echinoderm |
An internal supporting structure | endoskeleton |
An invertebrate with jointed legs, a body that is divided into sections and an exoskeleton | arthropod |
A hard covering that protects the bodies of some invertebrates | exoskeleton |
Broken up into 3 groups: flat, round and segmented | worms |
The largest group of invertebrates | arthropods |
The simplest kind of worm | flatworm |
has a thin body with pointed ends | roundworm |
a worm with a segmented body | segmented worm |
the simplest kind of invertebrate | sponge |