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Multiple Choice Questions
1. If natural selection is accepted, what is rejected?
(a) Variations must be subjective.
(b) All differences must be different species.
(c) Species were created independently.
(d) There is only artificial selection.
2. What does Darwin suggest about acquired traits in parents?
(a) They cannot be passed on.
(b) They can be passed to offspring.
(c) They do not last a lifetime.
(d) They cannot be selected for.
3. What seems unlikely, but must be possible concerning the migration of fish?
(a) Southbound migration.
(b) Fresh to saltwater migration.
(c) Accidental dispersal.
(d) Upstream migration.
4. Why might a hybrid species NOT survive birth?
(a) Physical deformities.
(b) Poor respiration.
(c) It is half-related to the mother and has difficulty surviving in the womb.
(d) Natural selection.
5. What happens to life forms that do NOT adapt?
(a) They become predators.
(c) They become extinct.
(d) They are prey.
Short Answer Questions
1. What do species found on islands do for the theory of natural selection?
2. How do biologists classify organisms?
3. In addition to the Formica rufescens, what other ant species takes slaves?
4. What does the fossil record suggest about species that go extinct?
5. What do naturalists understand will never happen to most organisms?
Short Essay Questions
1. Why do rudimentary organs pose a problem for theorists that species were created independently?
2. What is the key explanation for species living in different regions?
3. Describe the process of egg-laying of the European cuckoo.
4. How does Darwin explain how the same genus of species are found in different geographical regions?
5. How does natural selection explain the lack of links between generations?
6. What are some general rules governing whether or not two species can produce fertile offspring?
7. How can naturalists determine if land masses were once connected?
8. How does natural selection explain the behaviors of Formica rufescens?
9. Why do scientists have difficulty determining the effects of two distinct species breeding?
10. How does Darwin explain similarities in embryos?
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