71 The sporophyte is hoploid. A. true B. false 72. The microgametophyte is the e

Question

71 The sporophyte is hoploid. A. true B. false 72. The microgametophyte is the embryo sac A. true B. false 73. Plants produce gametes through meiosis A true B. false 74. When sperm and ega join in a plant, a zygote is formed. A. true false 75. If two organisms are in the same same phylum and the same order, then they also belong to the A. class. B. family C. genus. Dspecies E. subspecies 76. Viruses that become established as stable parts of the host cell genome are called A. lethal. B. potent. C. temperate D. virulent E. latent. 77. The onset of AIDS is often accompanied by A. a steep drop in T cell numbers. B. macrophage infection. a positive HIV test. D: lung infections and other opportunistic infections. E. Kaposi's sarcoma. 78. Mad cow disease is caused by a A. bacterium. B. virus C. viroid. D. virion. E. prion.

Explanation / Answer

71. b. false (sporophyte is diploid)

72. b. false (megagametophyte is embryo sac)

73.a. true

74. a. true

75. a. class

76. e. latent

77.d. lung infections and other opportunistic infections.

78.e. prion (infectious proteins).

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