Victory for the ACT Student Text 15e

S CIENCE R EVIEW • 343

2. The nervous system of female moths may be set up to allow them to respond differently to sounds of different frequencies. Based on the information in the graph, which statement best describes the appropriate responses of female moths? F. Approach sounds between 500 and 1,500 hertz, withdraw from sounds between 3,500 and 5,000 hertz G. Approach sounds between 3,500 and 5,000 hertz, withdraw from sounds between 500 and 1,500 hertz H. Approach sounds between 500 and 1,500 hertz and between 3,500 and 5,000 hertz J. Withdraw from sounds between 500 and 1,500 hertz and between 3,500 and 5,000 hertz 3. Which of the following statements is supported by the information in the graph? A. The wing-buzzing sounds of wasps occur at a narrower range of frequencies than the range of the male moth mating song. B. The frequency range of the male moth mating song is narrower than the range of wasp wing-buzzing sounds. C. Female moths cannot hear sounds with relative intensities less than 3. D. Male moths are less sensitive to sounds than predatory wasps.

4. Which of the following statements accurately describes the relationship between the male moth mating song and female moth hearing sensitivity? F. The frequency range of the male song coincides with the frequency range at which females are maximally sensitive to any sound. G. Females need not be maximally sensitive at the frequency range of the male song because of the extremely high intensity of the song. H. Females cannot hear the male song if its intensity level is less than 10. J. The male song does not extend to an intensity level above 10. 5. If a new species of wasp were introduced into the moths’ environment, which of the following wing-buzzing characteristics would make it the most successful predator of female moths? A. Extremely high intensity at relative frequencies between 3,500 and 5,000 hertz B. An intensity level of 7 to 8 dB at relative frequencies between 2,000 and 2,500 hertz C. Low intensity at relative frequencies above 6,000 hertz D. Extremely high intensity at relative frequencies above 6,000 hertz 6. A male is born with a mutation that changes his mating song to a frequency range between 2,000 and 2,500 hertz and an intensity level of 4 dB. What are his …Šƒ…‡• ‘ˆ ϐ‹†‹‰ ƒ ƒ–‡ǫ F. Excellent G. Poor H. Good, if no wasps are present J. Cannot be determined from the given information