1) Echinoderms all have _____________________ skin. a) smooth b) bumpy c) spiny d) rough 2) Choose one example of echinoderms. a) crab b) whale c) lobster d) sea urchin 3) Echinoderms have an internal skeleton. True or false? a) true b) false 4) The inner skeleton of an echinoderm is made up of_____________________. a) 306 bones b) bony plates that are bumpy or spiny c) narrow bones 5) The system of tubes that carry food and oxygen and remove waste in an echinoderm is called the ______________. a) nucleus b) food transport system c) water vascular system 6) Which echinoderm is this this? a) sea lily b) sand dollar c) starfish d) sea cucumber 7) Identify the sand dollar below. a) b) c) d) 8) How does an echinoderm move around? a) using their 5 body parts b) using its tube feet c) using its rear body parts 9) What does an echinoderm use these for? a) to move around and get food b) to poison its prey c) to camouflage its body 10) What is another name for starfish? a) fishstar b) sea star c) swimming star 11) A starfish is able to regenerate. What does this term mean? a) reproduce b) restart its life c) recycle d) regrow its body parts 12) How do sea urchins protect themselves? a) running from their prey b) hiding from their prey c) poisonous long spines 13) A sea urchin's mouth is on top of its body. a) True b) False 14) Sea urchins eat ______________. a) small fish b) sand c) sea plants 15) Identify the sea lily. a) b) c)

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