Elieser Alonso's Biology Crossword Puzzle

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Across
  1. 1. body cavity
  2. 3. tonguelike with many teeth
  3. 4. group that mostly consists of insects
  4. 5. protist which scientists believe animals evolved from
  5. 6. includes crocodiles, snakes, and lizards
  6. 10. Mammals whose young complete development in pouches
  7. 11. provides insulation against heat loss
  8. 14. includes frogs, toads, and salamanders
  9. 18. have cloaca like birds and lay hard-shelled amniote eggs
  10. 20. has both male and female sex organs
  11. 23. mouth directed downward
  12. 24. divide fluid-filled coelom
  13. 25. blastopore becomes anus
  14. 27. capture prey using a ring of tentacles that bear cnidocytes
  15. 28. free-living flatworms
  16. 29. body temperature matches the outside environment
  17. 31. consists of octopuses and squids
  18. 32. consists of gastropods, cephalopods, and bivalves
  19. 33. envelopes the visceral mass
  20. 34. includes clams, oysters, scallops, and mussels
  21. 36. body cavity incompletely lined with mesoderm
  22. 38. collects waste and excretes it through an opening in the body wall
  23. 40. most resemble the last single-celled ancestor of animals
  24. 43. segmented worm
  25. 44. primate group that includes lemurs
  26. 45. the study of insects
  27. 47. brain, eyespots, and chemosensitive organs on the front
  28. 49. another name for dorsal supporting rod
  29. 50. one pair of appendages per segment
Down
  1. 2. body is able to produce its own heat
  2. 4. no body cavity
  3. 7. mouth directed upward
  4. 8. larva bilaterally symmetrical and has four chordate characteristics
  5. 9. two pairs of appendages per segment
  6. 12. primate group that includes monkeys and humans
  7. 13. organized in right and left halves
  8. 15. used to attach to host
  9. 16. found in shallow waters, partially buried in sand
  10. 17. have many setae per segment
  11. 19. has a saclike body with many pores, and are aquatic
  12. 21. repeating body units
  13. 22. they have no setae and are fluid feeders
  14. 26. internal parasite
  15. 27. body cavity completely lined with mesoderm
  16. 30. muscular portion used for locomotion
  17. 35. process where larvae and adults have different lifestyles
  18. 37. have hair and mammary glands
  19. 39. blastopore becomes mouth
  20. 41. organized in a circle
  21. 42. have few setae per segment
  22. 46. supports internal organs
  23. 48. has to do with trees