1												2												3						4		5
		6		7										8
9						10							11					12									13
											14
		15								16												17
18															19						20		21
														22
				23																										24
																		25											26
			27													28
																									29	30
							31				32								33
				34										35							36
																													37
								38										39								40						41
				42
43
				44		45												46					47
		48
																					49					50
			51
		52
																							53
	54
55																								56
																							57

Across 2. tropism that is response to touch 6. largest group of mollusks 8. scientists determine age of plants by studying these organelles 9. leaves contain opening to allow gas exchange 11. tropism that is a response to gravity 13. thin layer of tissue in mollusks 16. these marine organisms need to keep moving to keep water moving over their gills 17. skeleton of a hagfish is made of this material 18. reptile that cares for its young 19. vascular tissue that carries water 21. pincers of the crustaceans that capture food 22. octopi and squid belong to this group 23. gas filled sac in fish, used in buoyancy 25. hagfish are this type of fish 26. outer layer of woody stems 27. cephalopods are this kind of eater 29. dividing layers of a stem that produces new xylem and phloem 31. type of circulation in a fish 35. seed leaves 39. leaf of a fern 40. place where an animal lives 42. embryo begins to grow 43. substance found in hollow fangs of snakes 44. insects use these to sense the environment 46. flextible rod in the back of chordates 48. type of eggs laid by reptiles 49. balanced arrangement of parts 52. type of root with many similar roots in a tangled mess 53. young plant that develops from the zygote 55. female reproductive part of a flower 57. sugar rich food found in flowers

Down 1. organ used by land vertebrates for respiration 3. change and development of body structures from egg to adult 4. ripened ovary that encloses the seed 5. vascular tissue that carries food 7. millipedes are these kind of eaters 10. structures or behaviors that allow organisms to function 12. number of chambers in an amphibian heart 13. shedding exoskeleton to form a new one 14. rootlike structure of a moss 15. tiny structures that contain cells that will become the sperm 18. plants make their own food, so they are called ____ 20. part of the flower that protects the bud 22. shrimp and lobsters belong to this group 24. ribbon of teeth used to get food in mollusks 28. snail and slugs belong to this group 30. mites and scorpions belong to this group of animals 32. body temperature changes with the environmental temperatures 33. older, inactive xylem 34. sticky part of the pistil that attracts the pollen 36. clams and oysters are this king of eaters 37. arachnids have these many legs 38. plants that complete their life cycle in2 years 41. the wings and legs of an insect attach to this body part 45. number of chambers in a fish heart 47. chemical that affects how the plant grows and develops 50. type of root with one long thick main root with smaller roots 51. group of angiosperms with flower in multiples of 4-5 54. organ in mollusks that removes oxygen from food 56. structure that contains the young plant