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Science and Nature Critical Reading Practice Exercises Set 3 (page 2)

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Updated on Sep 27, 2011

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  1. b.   Discrete means distinct, and as used in the passage, it is paired with specialized, a context clue. Choices a, c, d, and e are all synonyms for the homophone, discreet.
  2. d.   Choice b is not covered in the passage. Choices a, c, and e, while mentioned, are too specific to be viable titles. Choice d is broad-ranging enough to encompass the entire passage.
  3. c.   Scrimshawed means carved, as in line 12. The word is often associated with whaling and seafaring, so answer choices a, d, and e are all distracters stemming from that confusion regarding context. Because scrimshaw and enamel are wax-like substances, a less careful reader may choose b.
  4. d.   According to lines 21–22 of the passage, choices a, b, c, and e are all parts of the physical structure of teeth. Choice d, tusk, is not a component of teeth, but rather a type of tooth found in some mammals.
  5. d.   From the context in lines 13–17, it can be deduced that mastication means the act of chewing because tusks, evolved from teeth, are described in line 16 as able to go beyond chewing. Choices a, b, and c are distracters that might be chosen if not reading carefully. Choice e, preparation, is too vague.
  6. b.   Lines 30–32 clearly state that dentinal tubules are micro-canals that radiate outward through the dentine from the pulp cavity to the exterior cementum border.
  7. c.   In the passage, the substances in choices a, b, d, and e are all described as organic substances. Therefore, choice c, an inorganic substance, is correct.
  8. a.   Lines 55–58 identify how natural ivory can be authenticated.
  9. c.   According to the fifth paragraph of the passage, enamel is the hardest animal tissue (animal tissue, by nature, is a living thing, and thus organic), ameloblasts help form it, and it has a prismatic structure (choices a, b, d, and e). Choice c is incorrect because lines 55–58 state that ivory is commonly tested via ultraviolet light, which would indicate exposure.
  10. c.   Choice c is correct because these lines specifically speak to the evaluation process of the scientific method.
  11. d.   The entire passage is instructive and about educating the reader.
  12. e.   Falsificationism means to refute and prove wrong as supported in lines 38 and 63 of the passage.
  13. d.   Peer review is proposed as a vital part of the scientific method, and it is directly supported as such by lines 61–67 in the passage. The other statements are all true.
  14. c.   Lines 31–35 of the passage support this truth about hypotheses. The other statements about hypotheses are false.
  15. b.   This is the best choice as it explains the overall point of the passage, which is a step-by-step process covering the scientific method. Choice e is close, but the entire passage is not about evaluating data. Choice a is incorrect because the theory of relativity is only cited as an example, not as a general topic. Likewise, choice c only considers a small part of the passage. Choice d is too specific.
  16. c.   Operational definition is defined as a clear definition of a measurement in lines 26–29 in the passage.
  17. a.   Choice a is supported by the passage. Choice c is not supported anywhere in the passage. Choices b, d, and e are all incorrect interpretations of information contained in the passage and are careless choices.
  18. b.   All the other choices are indicated in the passage to be steps of the process of scientific method.

For more science and nature critical reading questions, review:

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