28.3 Diversity Among the Spiralians

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Across
  1. 4. This is divided into 2 groups: Lophophorus & Protozoans
  2. 7. Bryozoans, Brachiopods, and Phoronids
  3. 8. Flatworms, rotifers, molluscs, and annelids
  4. 10. These have a crown of cilia (corona), "wheel-shaped" that helps them move and helps direction of food to mouth.
  5. 12. (Include clams, oysters, mussels, & scallops) These have a shell hinged in 2, OPEN circulatory system, and have no head/radula.
  6. 13. Types of flatworm: flukes and tapeworms, that use a secondary host to produce offspring.
  7. 14. (Include Squids & octopi) These are "head-footed" having tentacles & arms to capture prey via suckers & have well-developed sense organs.
Down
  1. 1. These annelids have a FLAT body, sac body plan, & no body cavity.
  2. 2. These annelids are found in freshwater, having 2 additional suckers.
  3. 3. Annelids with a specialized digestive system, undergo segmentation, & are "hermaphroditic" - facing opposite directions parallel to each other.
  4. 5. Flatworms with an arrow head, ladder-type nervous system, & are hermaphroditic.
  5. 6. This group has a 3-part body plan: visceral mass, mantle, & foot.
  6. 9. Segmented septa that divide the coelom acting as a hydrostatic skeleton, CLOSED circulatory system, and setae for movement.
  7. 11. The largest class of molluscs (slugs, snails, conchs, etc.) that have a flat foot & well-developed head region.