CAT Verbal Ability Question with Video Solution

CAT 2020 MOCK Test Series at INR 1000/- only. Enroll Now
Question

Identify the most appropriate summary for the paragraph.

North American walnut sphinx moth caterpillars (Amorpha juglandis) look like easy meals for birds, but they have a trick up their sleeves—they produce whistles that sound like bird alarm calls, scaring potential predators away. At first, scientists suspected birds were simply startled by the loud noise. But a new study suggests a more sophisticated mechanism: the caterpillar's whistle appears to mimic a bird alarm call, sending avian predators scrambling for cover. When pecked by a bird, the caterpillars whistle by compressing their bodies like an accordion and forcing air out through specialized holes in their sides. The whistles are impressively loud - they have been measured at over 80 dB from 5 cm away from the caterpillar - considering they are made by a two-inch long insect.


  1. North American walnut sphinx moth caterpillars will whistle periodically to ward off predator birds - they have a specialized vocal tract that helps them whistle.
  2. North American walnut sphinx moth caterpillars can whistle very1 loudly; the loudness of their whistles is shocking as they are very small insects.
  3. North American walnut sphinx moth caterpillars, in a case of acoustic deception, produce whistles that mimic bird alarm calls to defend themselves.
  4. North American walnut sphinx moth caterpillars, in a case of deception and camouflage, produce whistles that mimic bird alarm calls to defend themselves.
Answer: 3
Please Login to see the Explanation


CAT 2020 Online Course

CAT Parajumble Questions with Video Solution


CAT Odd Sentence Questions with Video Solution


CAT Para Summary Questions with Video Solution