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Across 3. nose-like trunk used for feeding in nemertea 5. type of reproduction nematodes do NOT undergo 6. free living flatworms 7. tough outer covering produced by ectoderm in trematodes 9. surrounds the proboscis in nemertea 10. adaptations for staying put 11. "wormlike" 12. type of nerve cords connected like a ladder 14. type of host where sexual reproduction takes place 15. excretory system uses... 17. provided for muscle to work against 18. tissue level of platyhelminthes and nematodes 21. type of transmission where infection is done through feeding 25. type of characteristic carried over from embryonic development to adulthood 26. phylum of roundworms with no circular muscles 28. type of feeding for turbellarian 29. type of circulatory system in nemertea 32. aggregation of nervous tissue 33. lost by parasites

Down 1. simple gut order of turbellaria 2. modified pharynx; used to ingest prey 3. lacks a true coelom 4. embryonic structure that is retained by the adult 8. phylum of ribbon worms 13. tract where cestodes live 15. turbellarian sexual hermaphroditic reproduction 16. tapeworm class 17. order of trematodes that live only as ectoparasites 19. flatworm that lacks coelomic space 20. repeating units in adult tapeworms; future tapeworms 22. order of turbellaria with multi-branched gut 23. type of symmetry in platyhelminthes 24. digestive system of nematodes is... 27. what is provided for cilia to work against 30. order of trematodes that have multiple hosts 31. "head" in cestodes