[Campbell Biology P.1188] Based on the provided bar graph and the associated text regarding t... | Practice Question

Based on the provided bar graph and the associated text regarding the magnificent frigatebird's drumming frequency, which statement is most accurate?

  • A: Unmated males exhibit a lower average drumming frequency compared to males with mates.
  • B: Older, more successful males are expected to have a higher average drumming frequency.
  • C: The data suggests that lower drumming frequencies are associated with successful mating.
  • D: Drumming frequency significantly increases as a female circles overhead.

Explanation

The bar graph shows that "Males with mates" successful have an average drumming frequency of approximately 410 Hz, while "Unmated males" have a higher average frequency of approximately 460 Hz. This indicates that lower drumming frequencies are characteristic of males who have successfully mated. This aligns with the text stating that "Older males have larger pouches that produce lower drumming frequencies, which attract more females," suggesting these successful, older males are the ones with mates.