Sponges, Cnidarians, and Arthropods Trivia Marine Biology NEW! EACH GROUP GETS A CLICKER WITH A NUMBER! No groups larger than 3 individuals!! I will still record scores on the board so you can chart progress in the game. In order to check that you know how to use the clickers, answer the following question. PRACTICE QUESTION: NOT COUNTED! This is Nemo. He lives in a sea anemone, which is a type of A. sponge B. cnidarian C. arthropod 1. What kind of symmetry do Cnidarians have? A. bilateral B. radial C. none aka asymmetry 2. Cephalized animals have a distinct head containing many sense structures. A. true B. false 3. Lobsters, crabs, and crayfish belong in ORDER ________________. A. arthropoda B. mandibulata C. crustacea D. decapoda 4. Which animal belongs in Class Meristomata? A. crayfish B. horseshoe crab C. spider crab 5. Which appendages on a crayfish are used for moving? A. maxillipeds B. swimmerets C. antennules D. mandibles 6. What kind of symmetry does a crayfish have? A. bilateral B. radial C. none aka asymmetry 7. Small crustaceans, such as krill, are considered to be A. herbivores B. carnivores C. scavengers D. filter feeders 8. What is the gender of the Blue Crab in the picture below? A. male B. female 9. What type of animal below is most closely related to a spider? A. lobster B. blue crab C. horseshoe crab D. hermit crab 10. What type of circulatory system do arthropods have? A. open B. closed C. none, they use diffusion 11. What type of reproduction do arthropods use? A. sexual B. asexual C. both sexual and asexual 12. Shrimp and lobsters usually are considered A. filter feeders B. carnivores C. herbivores D. scavengers 13. Sponges are considered to be A. filter feeders B. carnivores C. herbivores D. scavengers 14. What type of reproduction do sponges use? A. sexual B. asexual C. both sexual and asexual 15. This picture shows a cnidarian in the ___________ shape. A. polyp B. medusa 16. What type of symmetry to sponges have? A. bilateral B. radial C. none aka asymmetry 17. The first animals on earth to invent the ability to move are A. sponges B. cnidarians C. arthropods 18. How does respiration happen in a cnidarian? A. diffusion B. gills C. book gills D. lungs 19. How does respiration work for a horseshoe crab? A. diffusion B. gills C. book gills D. lungs 20. What type of fertilization do cnidarians use? A. internal B. external 21. What type of reproduction do cnidarians use? A. sexual B. asexual C. both sexual and asexual 22. What type of fertilization do sponges use? A. internal B. external 23. This animal is molting. Its exoskeleton is made of A. cellulose B. chitin C. bone 24. Which appendages on arthropods are used for pushing food into the animals mouth? A. walking legs B. swimmerets C. maxillipeds D. chelipeds 25. Cnidocytes are specialized cells in sea anemones (and all other cnidarians) that are used for A. catching food B. protecting themselves from enemies C. moving in the water D. both A and B E. A, B, and C 26. These animals belong in Phylum_____ A. Porifera B. Cnidaria C. Arthropoda 27. This animal belongs in Phylum _________. A. Porifera B. Cnidaria C. Arthropoda 28. This animal belongs in Phylum __________. A. Porifera B. Cnidaria C. Arthopoda