Arthropods Crustaceans Echinoderms

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Arthropods Crustaceans Echinoderms

  1. 1. Arthropods
  2. 2. andEchinoderms
  3. 3. Invertebrates are animals that have no backbone.
  4. 4. An arthropod is an invertebrate withan exoskeleton, a segmented body, and jointed legs.
  5. 5. There are more than 1 million kinds of arthropods on Earth.
  6. 6. An exoskeleton is a hard, outer covering.
  7. 7. Molting is to leave an exoskeleton and grow a new one.
  8. 8. A crustacean is an arthropod that has a hard, exoskeleton, two pairs of antennae, and a mouth for crunching and grinding.
  9. 9. Crustaceans can ________ certain parts of their body. A ___________ can re-grow its claws. Most crustaceans live in ______ and get oxygen from the water through _________.Gills are
  10. 10. * Echinoderms are __________, ________, __________, ________, ____________, and _____________.* Echinoderm means_______________. Allechinoderms have spiny skin.
  11. 11. •There are ______ characteristics ofechinoderms.•All echinoderms have: • Spiny skin • An internal skeleton • A five part body • A water vascular system • Tube feet
  12. 12. * All echinoderms have__________. Some ofthem have small hair-likespines, like the starfish. * Some echinoderms have long spines, like the sea urchin.
  13. 13. * The internal skeleton of an echinodermis made of _______________________.* An echinoderm’s water vascular system is_________________________________.* The water vascular system also helps anechinoderm _____.
  14. 14. * Echinoderms have __________.* An echinoderm’s tube feet are used for_________________________________.
  15. 15. * Starfish are also called ___________.* Starfish have __________ arms connectedto a central body.* On the bottom of the arms are hundreds of___________ that look like suction cups.
  16. 16. * A starfish is able to re-grow its arms. * A starfish uses its tube feet to move and to open its food.
  17. 17. * Sea urchins have longer and sharper ________ that they use to protect themselves.* Some sea urchins have ________ spines.
  18. 18. * Sea urchins have a mouth hidden underits body.* A sea urchin uses its five teeth to eat____________.* A sea urchin is not very active. Sometimes, itdoes move slowly using its __________. Whennot moving it uses its feet to stick to the oceanfloor.
  19. 19. Let’s go to the Video! QuickTimeª and a Sorenson Video decompressor are needed to see this picture.

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