___________________ 44. A __?__ produces both egg and sperm within the same animal.

___________________ 45. Roundworms belong to the phylum

___________________ 46. What do we call animals that live off a host organism and kill it.

___________________ 47. The only way humans can get trichinosis is by eating raw or undercooked

___________________ 48. The flukes are classified as

___________________ 49. The primary host of a parasite is the organism in which

___________________ 50. Large numbers of filarial worms may block lymph vessels and cause

___________________ 51. What type of worm lives inside the intestines of their host and survives on digested food.

___________________ 52. The tapeworms are in the class _____.

___________________ 53. The nervous system of a roundworm does not include

___________________ 54. Trichinosis is caused by a (an) _____.

___________________ 55. Muscular tube in flatworms used to suck food in

___________________ 56. The class Turbellaria includes the

___________________ 57. Which type of unsegmented worms may have asexual reproduction.

___________________ 58. For locomotion, free-living flatworms usually use

___________________ 59. Ascaris is a parasitic _____.

___________________ 60. Long, flat parasitic tapeworms that live simple lives belong to the class

___________________ 61. The simplest animals with bilateral symmetry are

___________________ 62. The simple unsegmented worms belong to the phylum

___________________ 63. Which phylum contains planaria, flukes, and tapeworms?

___________________ 64. The proglottids of a tapeworm consist mainly of

___________________ 65. The phylum Platyhelminthes consists of simple animals called

___________________ 66. Which of the following is not true of parasitic worms.

___________________ 67. The Nematoda phylum contains

___________________ 68. Which unsegmented worms include free-living and parasitic animals.

___________________ 69. All roundworms reproduce asexually. T F

___________________ 70. Which type of unsegmented worms include blood flukes.

___________________ 72. Which worms eliminate undigested wastes through anus.

___________________ 74. The first phylum in which most members exhibit cephalization includes the

___________________ 75. Planarians reproduce asexually by __?__, the ability to replace body parts.

___________________ 76. In a parasitic worm, sexual reproduction occurs in the secondary host. T F

___________________ 77. The process by which larvae grow and change their shape dramatically is

___________________ 78. Flatworms are considered hermaphrodites because they have both male and female reproductive organs. T F

___________________ 79. Which structure removes excess water from the body cells of planaria?

___________________ 80. Parasitic flatworms belong to the class

___________________ 82. Flukes and tapeworms are __?__ flatworms.

___________________ 83. A roundworm that enters the body through bare feet is the

___________________ 84. Worms have two basic life styles: __?__ and parasitic

___________________ 85. Are members of phylum Nematoda.

___________________ 86. The long thin unsegmented worms belong to the phylum

___________________ 87. Both flatworms and roundworms breathe and excrete metabolic waste through the

___________________ 88. A tapeworm is a parasite that contains

___________________ 89. __?__ is a common roundworm parasite of humans.

___________________ 90. To get rid of extra water, planarians use

___________________ 91. Each of the following are parasitic roundworms except

___________________ 92. Almost every kind of plant and animal is affected by one or more parasitic

___________________ 93. Trichinosis is caused by a fluke. T F

___________________ 94. What types of worms are invertebrates

___________________ 95. Free living flatworms belong to the class

___________________ 96. Which type of unsegmented worm includes Ascaris?

___________________ 97. The youngest and smallest proglottids of a tapeworm are at the posterior end. T F

___________________ 98. A tapeworm attaches itself to the host by suckers on its scolex. T F

___________________ 99. The simplest animal that has a digestive tract with two openings is a

___________________ 100. The simplest animals with bilateral symmetry, some have cephalization, or development of and anterior end belong to the phylum

___________________ 101. Free living flatworms are called

___________________ 102. Hermaphrodites are

___________________ 103. Most __?__ are internal parasites that infect the blood and other organs.

___________________ 104. A flatworm sucks food into its body through its

___________________ 105. Unsegmented worms that have a digestive system with only one opening.

___________________ 106. Which structure is an adaption of parasitic worms?

___________________ 107. Parasitic flatworms life cycle requires at least __?__ hosts

___________________ 108. A filarial worm is a parasitic _____.

___________________ 109. __?__ are among the simplest animals to have a digestive system with two openings, a mouth an anus.

___________________ 110. The simplest animals with a mouth and an anus are _____.