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