Life Science Final Exam 2014 Study Guide Questions 1-75 Multiple Choice Questions 76-97 Short Answer Questions 98-99-100 Essay 1. What evidence indicates that birds are descended from…REPTILES 2. A bird’s nearly hollow bones help it to…LIGHTWEIGHT IN THE AIR 3. The toes of perching birds are adapted to help the birds…LOCK ONTO A BRANCH 4. Birds play an important role in the environment by…CARRY SEEDS TO NEW LOCATIONS 5. As a bird’s wing moved forward through the air, the air pressure on the wing…IS LESS ABOVE THE WING THAN BENEATH IT. 6. During soaring flight, a bird…RISES ON A CURRENT OF WARM AIR/THERMALS 7. Which characteristic is NOT common to all mammals? DO ON TEST. 8. Fur is an adaptation that allows mammals to…SURVIVE IN COLD CLIMATES 9. What characteristic is used to classify a mammal as a monotreme, marsupial, or placental mammal? THE WAY IN WHICH ITS YOUNG DEVELOPS 10. A mammal’s gestation period is the length of time…BETWEEN FERTILIZATION AND BIRTH 11. Birds are the only animals that have…FEATHERS 12. What is the name of the upward force that enables a bird to fly? LIFT 13. Which type of flight requires a bird to exert the most energy? FLAPPING 14. What is the function of down feathers? TO KEEP THE BIRD WARM 15. Some birds swallow small stones, which help them to…GRIND FOOD 16. Unlike most mammals, bats are able to…FLY 17. Where do many birds store food that they are not ready to digest? IN THE CROP 18. A strand of hair or fur is composed of…DEAD CELLS 19. The large muscle that enables mammals to breath in and out is called the…DIAPHRAGM 20. Most mammals have teeth with how many different shapes? FOUR 21. What is the function of canine teeth in most mammals? STAB AND TEAR FOOD 22. Which of these structure help birds get enough oxygen to fly? AIR SACS 23. Which type of mammal lays eggs? MONOTREME 24. Which of these animals is a monotreme? DO ON TEST 25. What adaptation helps an ostrich survive in its environment? STRONG LEGS 26. Where does a placental mammal develop before its body systems can function independently? INSIDE THE MOTHER’S BODY 27. The function of the placenta is to…PASS MATERIALS FROM THE MOTHER TO THE EMBRYO/FETUS 28. Differences in pressure above and below a bird’s wings cause a force called…LIFT 29. The upward force on a bird’s wing causes the bird to…RISE 30. Diving is a type of flight that…DOES NOT REQUIRE LIFT/ENERGY 31. At some point in their lives, all chordates have a flexible supporting rod in their backs called a…NOTOCHORD 32. The latest group of vertebrates to arise was probably the…BIRDS 33. If an animal is an ectotherm, it has…A BODY THAT DOES NOT PRODUCE MUCH INTERNAL HEAT 34. What does the backbone surround and protect in a vertebrate? THE SPINAL CORD 35. Fishes take in oxygen through their…GILLS 36. Most fishes reproduce by means of…EXTERNAL FERTILIZATION 37. Which of the following fishes has a skeleton made of hard bone? DO ON TEST 38. The scales of many cartilaginous fishes are…POINTED GIVING THE SKIN A ROUGH TEXTURE 39. Most adult amphibians can obtain oxygen through…LUNGS AND THIN, MOIST SKIN 40. How many chambers are there in a typical adult amphibian’s heart? THREE 41. An adaptation that helps amphibians move from place to place on land is…A STRONG SKELETON 42. Amphibians are especially sensitive to changes in the environment because…THEIR SKIN IS DELICATE 43. An adult reptile can survive on dry land because its kidneys…PRODUCE CONCENTRATED URINE 44. Which of these organs help a reptile keep water in its body? SKIN AND KIDNEYS 45. How is a reptile egg different from an amphibian egg? IT HAS A SHELL AND INTERNAL MEMBRANES 46. What is one way in which a reptile’s egg is adapted to survive on land? THE EGG HAS MEMBRANES THAT KEEP THE EMBRYO MOIST 47. One major difference between lizards and snakes is that lizards…HAVE LEGS 48. Which of the following statements is true of the feeding behavior of all snakes? THEY ARE CARNIVORES 49. Fossils are most often found in…SEDIMENTARY ROCK 50. Which of these is LEAST likely to be learned by studying animal fossils? DO ON TEST 51. To which phylum do vertebrates belong? CHORDATA 52. When the temperature of the environment changes, the body temperature of a reptile…CHANGES 53. An animal whose body temperature does not change much, even when the temperature of the environment changes is called…ENDOTHERM 54. What type of fish is a lamprey? JAWLESS FISH 55. All turtles obtain food by…USING SHARP EDGED BEAKS TO TEAR FOOD 56. If a fish’s swim bladder was destroyed, the fish would be unable to…STABILIZE ITS BODY AT DIFFERENT DEPTHS 57. The larva of a frog or toad is called a(n)…TADPOLE 58. A large part of a turtle’s body is covered by a protective…SHELL 59. Dinosaurs were a major group of…REPTILES 60. Dinosaurs are the earliest vertebrates known to have legs…POSITIONED DIRECTLY BENEATH THEIR BODIES. 61. Which of the following is a characteristic shared by all animals? THEIR BODIES HAVE MANY CELLS 62. An animal that has a backbone is called a(n)…VERTEBRATE 63. Which of these animals has radial symmetry…SEA ANEMONE 64. An animal has bilateral symmetry if…ONE LINE CAN BE DRAWN TO DIVIDE THE ANIMAL INTO HALVES THAT ARE MIRROR IMAGES 65. What does a cnidarian use to capture prey…STINGING CELLS 66. What makes up a coral reef? THE SKELETONS OF DEAD CORALS 67. Which of the following best describes the kinds of animals found in a coral reef? INVERTEBRATES AND VERTEBRATES 68. Which of these is NOT a major kind of worm? DO ON TEST 69. Which of the following describes a roundworm’s digestive system? THE DIGESTIVE SYSTEM IS LIKE A TUBE THAT IS OPEN AT BOTH ENDS 70. The process by which a new organism forms from the joining of an egg cell and sperm cell is called? SEXUAL REPRODUCTION 71. Which of these is a phylum of worms? ANNELIDA 72. Organisms that grow on or in other organisms are called…PARASITES 73. Sponges belong to the phylum…PORIFERA 74. Which of the following is true of all mollusks...THEY HAVE SOFT BODIES 75. An arthropod’s tough outer covering is called…AN EXOSKELETON -----------------------#s 76-100 require your own research------------------------------------------ 76. Which organisms shown are producers? 77. Which organisms shown are consumers? 78. What would happen to the other organisms if all the plants in this ecosystem died? 79. Use the organisms pictured in this ecosystem to construct a food chain. 80. Describe two things that prairie dogs need to live that they obtain from their habitat. 81. What is the smallest unit of organization in an ecosystem? Give one example from the diagram. 82. Describe one of the prairie dog’s adaptations and how it helps the prairie dog to survive. 83. What level of ecological organization do all of the owls in a certain area represent? 84. Is the prairie soil a biotic factor or an abiotic factor? Explain. 85. Describe 3 factors that could limit the growth of the prairie dog population. 86. How was the pheasant population changing at Point A? 87. Which letter marks the peak of the pheasant population? 88. What happened to the pheasant population between Point B and Point C? 89. What are some of explanations for the change in pheasant population between Point B and C? 90. In 1990, a large resort hotel was built on the island where these pheasants live. Explain how this might have affected the pheasant population. 91. What was the population density of pheasants in 1968, 1976, and 1990? 92. How did the eggshell thicknesses of bird species A and B change between 1945 and 1950? 93. How is eggshell thickness related to the survival of bird species A and B? 94. How might bird species A and B come into contact with DDT, a pesticide used by farmers? 95. Which species of bird has a thicker eggshell? 96. What happened to the eggshell thickness of both species after 1973? Suggest a reason for this change. 97. Had the eggshells of either species returned to their original thickness by 1980? Suggest a reason to explain your answer. 98. Explain why the population of a predator and its prey often follow regular cycles. 99. Describe how oxygen and carbon dioxide cycle in the environment. 100. Compare and contrast the temperatures of the following biomes: tropical rain forest, deciduous forest, boreal forest.