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Science Ch. 9 Flashcards Test

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6 Written Questions

6 Multiple Choice Questions

  1. a species of humans with modern features that may have migrated out of Africa 100,000 years ago and eventually into every continent
  2. Precambrian: cyanobacteria, eukaryotes, prokaryotes, oxygen in the atmosphere, ozone
    Paleozoic: creepers, plants, aerobic animals
    Mesozoic: Age of the Reptiles, dinosaurs
    Cenozoic: humans and their ancestors
  3. the period in the geologic time scale beginning about 248 million years ago and lasting about 183 million years ago- called Age of the Reptiles. Dinosaurs, marine lizards, birds, cone-bearing trees, and starting flower bearing plants.
  4. an early hominid that evolved more than 3.6 million years ago
  5. determining whether an event or object, such as a fossil, is older or younger than other events or objects
  6. a cell that contains a central nucleus and a complicated internal structure

5 True/False Questions

  1. Prokaryotea cell that contains a central nucleus and a complicated internal structure

          

  2. What causes an era on the geological time scale to end?opposable thumbs, opposable big toes in all primates except humans, 5 fingers, binocular vision

          

  3. What are the characteristics of primates?opposable thumbs, opposable big toes in all primates except humans, 5 fingers, binocular vision

          

  4. Absolute Datingestimating the age of a sample or event in years , usually by measuring the amount of unstable atoms in the sample

          

  5. Prosimiansthe first primate ancestor; also, a group of living primates that includes lorises and lemurs, 55 million years ago

          

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