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Science Crossword

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Across
  1. 1. Multicellular eukaryote that produces its own food through photosynthesis
  2. 5. (Bends) light rays so the rays focus on the retina
  3. 7. A diagram that shows the occurrence of a genetic trait in several generations of a family.
  4. 9. Record The millions of fossils that scientists have collected
  5. 10. Male part of the flower
  6. 16. Material through which a wave travels
  7. 17. High blood pressure
  8. 19. Isolation Isolation between populations due to physical barriers
  9. 20. the tightening of a muscle
  10. 23. A flower structure that encloses and protects ovules and seeds as they develop.
  11. 24. An animal without a backbone
  12. 28. Darwin English natural scientist who formulated a theory of evolution by natural selection (1809-1882)
  13. 29. Attaches muscle to bone
  14. 33. event A disastrous event
  15. 36. A sound's intensity
  16. 37. layer
  17. 39. Compound
  18. 40. The principle that in undisturbed rock layers the oldest rocks are on the bottom
  19. 41. A term that typically describes a species that no longer has any known living individuals.
  20. 42. Control Center of the cell
  21. 43. Lower chambers of the heart
  22. 46. How high or low a sound is
  23. 48. a coiled bony fluid-filled tube in the inner ear; sound waves traveling through the cochlear fluid Trigger Nerve impulses
  24. 50. Division of the cytoplasm during cell division
  25. 51. variety
  26. 53. Mineralized connective tissue.
  27. 55. Any organic compound whose molecule contains one or more hydroxyl groups attached to a carbon atom.
  28. 58. Microscopic blood vessels that connect arteries and veins
  29. 59. A living thing that is not a human being or plant
  30. 61. pivot point of a lever
  31. 63. A plant that produces seeds that are exposed rather than seeds enclosed in fruits
  32. 66. A force that pushes on or squeezes a material.
  33. 69. The opening through which light enters the eye
  34. 70. An organism's physical appearance or visible traits.
  35. 71. Ability of an animal to look like another more harmful animal
  36. 72. Atoms of the same element that have different numbers of neutrons
  37. 73. Blood vessels that carry blood away from the heart
  38. 75. Age The age of a rock compared to the ages of rock layers
  39. 76. Female part of the flower
  40. 77. unicellular fungi
Down
  1. 2. Upper chamber of the heart
  2. 3. The height of a wave's crest
  3. 4. A ring of muscle tissue that forms the colored portion of the eye around the pupil and controls the size of the pupil opening
  4. 6. An organism that is internally warmed by a heat-generating metabolic process
  5. 7. Bacterial infection of the lungs
  6. 8. The clear tissue that covers the front of the eye
  7. 11. Passes on from one place to another
  8. 12. Powerhouse of the cell
  9. 13. Decay The breakdown of a radioactive element releasing particles and energy
  10. 14. THE STUDY OF EMBRYOS
  11. 15. Canal The area that sound waves pass through to reach the eardrum
  12. 18. A reflected sound wave
  13. 21. A collection of tissues that carry out a specialized function of the body parent cell original cell before cell division
  14. 22. an organism that contains two different alleles for a trait (Aa)
  15. 25. Produces pollen
  16. 26. Blood vessels that carry blood back to the heart
  17. 27. Takes in and retains energy
  18. 30. A person who studies plants and animals by observing them
  19. 31. A scientist who studies fossils
  20. 32. Cells The two new cells that result from mitosis and cytokinesis
  21. 34. A connective tissue that is more flexible than bone and that protects the ends of bones and keeps them from rubbing together.
  22. 35. Tissue composed of fibers that can contract causing movement of an organ or part of the body
  23. 38. Straightening a body part
  24. 44. the act of concealing the identity of something by modifying its appearance
  25. 45. Damage to the brain from interruption of its blood supply.
  26. 47. flowering plants
  27. 49. The shaking that results from the movement of rock beneath Earth's surface.
  28. 52. A place where two or more bones meet
  29. 54. selection Organisms most adapted to environment are more likely to survive.
  30. 56. Basic unit of life
  31. 57. dominance Situation in which one allele is not completely dominant over another allele
  32. 60. Cell division that produces reproductive cells in sexually reproducing organisms
  33. 62. A hypothesis that has been tested with a significant amount of data
  34. 64. genetic makeup of an organism
  35. 65. Muscles attach to bones to help provide movement
  36. 67. sticky portion at the top of the style where pollen grains frequently land
  37. 68. The stalk of a flower's carpel with the ovary at the base and the stigma at the top.
  38. 74. Light sensitive layer of the eye; contains rods and cones