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Invertebrates

QuestionAnswer
invertebrates animals that do not have a backbone
sponges asymmetrical invertebrates, that contain some specialized cells, but no tissues or organs
cnidarians invertebrates that have stinging cells and take food into a central body cavity
worms invertebrates with bilateral symmetry, a head and tail end, and are made of tissues, organs, and organ systems.
mollusks invertebrates with soft, unsegmented bodies that are often protected by a hard outer shell
arthropods invertebrates that have hard outer coverings, segmented bodies, and pairs of jointed appendages
exoskeleton outer skeleton
echinoderm invertebrate that has an internal skeleton and a system of fluid-filled tubes
endoskeleton internal skeleton
flatworms have flat, soft bodies; some have eyespots on their heads that detect light.
roundworms look like smooth, thin tubes; have two body openings (mouth and anus)
segmented worms have bodies made up of many linked sections called segments; are the simplest animals with a brain, which helps them detect food and predators
Created by: kmsew
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