ISC Chapter 22

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ISC Chapter 22
2011-10-08 12:17:58
ISC Chapter 22

ISC Chapter 22
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  1. A successful geological clock was possible only after 20th Century scientists made important discoveries in the field of
    A. subatomic physics
  2. Geologists use certain guiding principles when they attempt to read the story of the rocks in a particular
    locale. Which of these only applies to sedimentary rocks?
    B. original horizontality
  3. Which environment would be the most unsuitable for the preservation of an ancient organism?
    A. burial in a lava flow
  4. The first fossils of both dinosaurs and mammals can be found in sedimentary rocks of the ________ period
    D. Triassic
  5. Life, originally confined to bodies of water on Earth, begins to move onto land near the end of the
    D. A and C
  6. Evidence for the use of stone tools can be found as far back as:
    C. the Australopiths
  7. While no other hominin survived to live alongside you and me today, fully modern humans did share the Earth with ________ for some thousands of years.
    A. H. neanderthalensis
  8. Sponges are members of Kingdom
    A. Animalia
  9. Just after modern plants evolved from their algal ancestors, they diverged into these two main groups:
    A. vascular and non-vascular
  10. Plant embryos develop into a (an):
    C. seed
  11. The greatest diversity of animal life today can be found where?
    D. in the ocean
  12. Which of these objects of the Solar System appear to have made a major difference in the course of life on
    B. asteroids
  13. Which of these organisms would likely leave the fewest fossils, of any type?
    A. amoebas
  14. A fossil plant is found to be approximately 12,000 years
    old. Knowing this, we can conclude the fossil contained _________ of the normal ratio of C-14 to C-12.
    C. one-fourth
  15. Determination of the age of the Moon could be made by finding the abundance of which of these radioactive daughter products in a rock sample?
    D. lead-208
  16. You come across an angular unconformity in a roadcut along an interstate highway. The story of the road cut rock mass tells you __________ had to have happened in the deep past.
    D. all of these
  17. Someone hands you a broken piece of sandstone and in it, you find a pencil-thick hole that meanders its way
    through the rock mass for several inches. Which of these is a likely but not definitive, explanation for the
    B. made by burrowing worm
  18. The oldest plants on Earth began to grow during the time of the:
    A. builders of the Egyptian Giza pyramid complex
  19. Developed by James Hutton, the concept that present day geological processes could be extended into the past is known as:
    B. the principal of uniformity
  20. Early attempts to derive an age of the Earth did NOT include:
    C. rate of speciation events
  21. The modern, accurate geological clock uses ________ with which to determine the age of rock samples.
    D. the decay rate of radioactive isotopes
  22. The place in a sedimentary rock mass where there exist missing layers due to ancient erosion is called a (an):
    C. unconformity
  23. Any evidence of former life given this term:
    A. fossil
  24. The scientific study of the history of life as recorded in fossils is called:
    D. paleontology
  25. A void space in sediment left by a dissolved shell will create a kind of fossil called a (an):
    C. mold
  26. Distinctive fossils of short-lived plant or animal species that were distributed widely over the Earth are useful
    to paleontologists and geologists in establishing age correlation and are termed:
    A. index fossils
  27. The smallest blocks of the geologic calendar:
    D. epochs
  28. Fossils most similar to life forms which exist in the present-day are found in sedimentary rocks of the ________ era.
    B. Cenozoic
  29. The coal deposits we now use as a source of energy were deposited during the ________.
    C. Carboniferous
  30. The collective term now used to refer to modern humans and our humanlike ancestors:
    C. hominin
  31. Organisms of the genus homo first appear in the fossil record about ________ years ago.
    A. 2.5 million
  32. The science of naming organisms and grouping them into logical categories:
    B. taxomony
  33. Mammals, reptiles, and amphibians are all examples of a group of lifeforms classified in the same biological
    B. class
  34. Evidence of relatedness between and among organisms is gather from:
    D. all of these
  35. Most members of the Kingdom _______ are one-celled organisms.
    D. Protista
  36. Plants, fungi, and animals all appear to have had a common origin among the
    A. Protista
  37. The life cycle of a plant has two stages called:
    C. sporophyte and gametophyte
  38. All animals are:
    A. heterotrophs