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Casteel Invertebrate


Invertebrates do not have a ____________________. backbone
A little over 95% of animals are __________________. invertebrates
The _________________ invertebrates are sponges, corals, and jellyfish. simplest
_____________ have a shell that protects their soft bodies. Mollusks
Squids have an __________________ shell. internal
An _____________________ has no shell. octopus
Examples of ______________ are sea urchins and sea stars. echinoderms
Echinoderms live in _____________ water. salt
Echinoderms have body parts in multiples of ______. five
__________________ have body parts in segments. Arthropods
Arthropods include _______________, spiders, and insects. crustaceans
Crustaceans have a hard __________________ shell. exterior
Crustaceans have five ____________ of jointed limbs. pairs
Spiders have __________ body segments. two
Spiders have _____________ legs. eight
_______________ have antennae, jaws, and three body segments. Insects
There are more insect species on ____________ than all other animal species combined. Earth
Created by: lkcasteel
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