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Across 4. group of vertebrates that require water to breed 11. group of arthropods that can have up to 200 legs 13. "cold blooded" 14. phylum classification of a sea star 16. animals where the anus is the first opening to develop in an embryo 22. incomplete body cavity 23. group of vertebrates that were the first to lay eggs 24. egg-laying mammals 25. body type with paired body parts, with one on each side of the body (2 words) 28. type of vertebrate that has a bony scale covered shell 29. closest relative to the Plant Kingdom (2 words) 32. phylum classification of a sponge 33. phylum of invertebrates that have nematocysts 34. diploid stage in plants 35. only living animals to have feathers 36. pores on the leaf surface that controls water conservation 37. example of a non-vascular plant 38. animal with no body cavity 39. example of a seedless vascular plant

Down 1. layer on plant leaves that restricts water loss (2 words) 2. group of arthropods that have eight legs 3. flowering plants 5. mesh of branched filaments that absorb nutrients in fungi 6. haploid stage in plants 7. seed-bearing non-flowering plants 8. complete body cavity 9. "warm blooded" 10. organ that allows nutrients to pass between mother and embryo 12. the first animals are believed to have evolved frome these types of organisms 15. body type that has repeated body parts around a central axis (2 words) 17. phylum of invertebrates with a muscular foot 18. an important adaptation for bird flight (2 words) 19. no body cavity 20. types of animals where the mouth is the first opening to develop in an embryo 21. example of a jawless fish 26. phylum of segmented worms 27. pouched mammals 28. animals that walk on four legs 30. example of an unsegemented worm 31. ancient extinct relative of birds