Chapter 25 Review: 19632/5025794

  1. Humans and other mammals belong in phylum
    1. Arthropoda. (wrong)
    2. Mollusca. (wrong)
    3. Chordata. <==== correct
    4. Annelida. (wrong)
    5. Cnidaria. (wrong)
      Hint
  2. The ________ was the most severe of mass extinction.
    1. Ordovician (wrong)
    2. Devonian (wrong)
    3. Triassic (wrong)
    4. Cretaceous (wrong)
    5. Permian <==== correct
      Hint
  3. Fossil evidence for photosynthetic prokaryotes as early forms of life include
    1. banded iron formations. <==== correct
    2. Dimetrodon. (wrong)
    3. iridium. (wrong)
    4. synapsids. (wrong)
    5. diapsids. (wrong)
      Hint
  4. Tectonic events such as earthquakes and volcanic eruptions are mainly caused by
    1. genetic drift. (wrong)
    2. bottlenecks. (wrong)
    3. iridium. (wrong)
    4. continental drift. <==== correct
    5. meteorite strikes. (wrong)
      Hint
  5. Adaptive ________ can produce many diverse species, adapted to different niches, from a common ancestor.
    1. convergence (wrong)
    2. divergence (wrong)
    3. selection (wrong)
    4. radiation <==== correct
    5. isolation (wrong)
      Hint
  6. Some of the earliest fossils are ________ formed when layers of sediment were trapped by bacteria.
    1. stalactites (wrong)
    2. stalagmites (wrong)
    3. stomata (wrong)
    4. stroma (wrong)
    5. stromatolites <==== correct
      Hint