edited by
659 views
0 votes
0 votes

About $96\%$ of Scandinavian moths have ears tuned to the ultrasonic pulses that bats, their predators, emit. But the remaining $4\%$ do not have ears and are deaf. However, they have a larger wingspan than the hearing moths, and also have higher wingloadings- the ratio between a wing's area and its weight- meaning higher maneuverability.

Which one of the following can be best inferred from the above passage?

  1. A higher proportion of deaf moths than hearing moths fall prey to bats.
  2. Deaf moths may try to avoid bats by frequent changes in their flight direction.
  3. Deaf moths are faster than hearing moths, and so are less prone to becoming a bat's dinner than hearing moths.
  4. The large wingspan enables deaf moths to better receive and sense the pulses of their bat predators.
edited by

Please log in or register to answer this question.

Related questions