CD/Web Review Questions

Chapter 3, The Diversity of Life

  1. Which period marks the emergence of land plants? Hint

  2. What profound environmental change took place during the Paleogene? Hint

  3. What three groups of organisms appeared in the Early Devonian Period? Hint

  4. The slow regression of shallow seas during the later part of the Devonian Period may have been a factor in the rise of which group of animals? Hint

  5. What environmental factor may have been responsible for the mass extinction of trilobites and other life forms at the end of the Cambrian period? Hint

  6. What is the difference between body fossils and trace fossils? Hint

  7. What is amber? Hint

  8. About how many species have been given scientific names? Hint

  9. Which group of animals makes up three-quarters of the known animal species on Earth? Hint

  10. The forelimb of a lizard, the wing of a bird, and the human arm are examples of ____________ ____________. Hint

  11. Are vertebrates or invertebrates more numerous? Hint

  12. Reptilia and Amphibia are examples of what level of taxonomic classification? Hint

  13. What is the object that contains evidence leading scientists to believe primitive life may have existed on Mars more than 3 billion years ago? Hint

  14. What three pieces of evidence lead scientists to believe primitive life may have existed on Mars more than 3 billion years ago? Hint

  15. In what period did the earliest land plants develop? Hint

  16. What is the scientific name for mosses? Hint

  17. What is the scientific name for flowering plants? Hint

  18. What are the two kinds of predators? What do they eat? Hint

  19. What are the three types of ecological consumers? Hint

  20. What do detrivores eat? Hint

  21. In what era did virtually all major animal groups appear? Hint

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