Annelids, Crustaceans, & Echinoderms

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  1. 4. A type of echinoderm that is round shaped. Eats algae, which helps save coral reefs. Has spikes that can expel dangerous toxins.
  2. 8. Organisms in the arthropod group contain segmented bodies, jointed legs, and an ___________.
  3. 9. Division of the body into repeating segments. Present in annelids.
  4. 10. A term for when unwanted marine life gets trapped in nets by fishermen.
  5. 11. Name for worms that live in water.
  6. 13. Tubes found in annelids that removes waste from the body.
  7. 14. A type of echinoderm contains a set of organs in each leg.
  8. 15. A group of organisms that includes the feather stars and sea lilies.
  9. 16. Small, shrimp-like organisms that are a good food source for large marine organisms, such as whales.
  10. 18. An organism that has an elongated body with tentacles around the mouth. Eats nutrients in the sand.
  11. 20. A group of organisms that includes lobster, shrimp, and crabs. All of these organisms contain ten legs.
  12. 22. Small, teardrop shaped organisms that are a food source for other marine organisms.
Down
  1. 1. A type of echinoderm that has long slender legs. All its organs are found in its central disk.
  2. 2. Group of arthropods that live in the ocean.
  3. 3. Another name for complex worms.
  4. 5. System that controls the extension or withdrawal of tube feet.
  5. 6. A large group of organisms that includes spiders, insects, crabs, and more.
  6. 7. Almost all echinoderms contain ______ body segments.
  7. 12. A group of organisms that includes sea stars, brittle stars, urchins, and more.
  8. 14. A type of echinoderm that is disk shaped. Contains tube feet when alive.
  9. 17. A crustacean that lives attached to various structures, such as whales, turtle shells, and boats.
  10. 19. Small structures that echinoderms use to crawl and grasp onto things.
  11. 21. A process that crustaceans go through as they shed their exoskeletons.