Species of show the greatest diversity in the Cenozoic era
a. birds
b. trilobites
c. reptiles
d. insects
d
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What group of mammals have (a) embryos that spend more time feeding through the placenta than the mother's nipples, (b) young that feed on milk, and (c) a prolonged period of maternal care after leaving the placenta?
A) Eutheria B) Marsupiala C) Monotremata
Which of the following animals is a genetic male?
A. bird ZW B. grasshopper XO C. honeybee diploid D. Drosophila XXY
What is characteristic of adult frog respiration?
A. Gills B. Sucking air into their lungs using chest muscles C. Countercurrent exchange D. Drawing in air by lowering their mouth floor E. Drawing water by inhalation across their gills
Which of the following is NOT a cytopathic effect of viruses?
A) cell death B) host cells fusing to form multinucleated syncytia C) inclusion bodies forming in the cytoplasm or nucleus D) increased cell growth E) toxin production