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Invertebrates

Animals without a backbone

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Invertebrates are divided into _____________. 5 major groups
__________ are very simple animals that have many pores through which water flows. Sponges
________________ have body parts that extend from the middle of their body outwards. Echniderms
Echinoderms have ________ ________ and __________. Examples are Starfish, sea cucumbers, and sea urchins. tube feet; spines
Arthropods have jointed legs, live on land and water, and have hard outer coverings called _______________. exoskeleton
______________ have segmented bodies. Arthropods
_____________ have soft bodies and a thick muscular foot for movement or to open and close their shells with. Mollusks
Examples of __________ include snails, clams, squid, oysters, jellyfish and octopuses. mollusks
_____________ ____________ (Annelids) are the simplest organisms with a true nervous system. Segmented Worms
Segmented worms have soft, long ___________ bodies that are divided into segments. tube-like
Created by: mmsscience6
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