$Assertion :$ When a beetle moves along the sand within a few tens of centimeters of a sand scorpion, the scorpion immediately turns towards the beetle and dashes towards it
$Reason :$ When a beetle disturbs the sand, it sends pulses along the sand's surface. One set of pulses is longitudinal while the other set is transverse.
$Reason :$ When a beetle disturbs the sand, it sends pulses along the sand's surface. One set of pulses is longitudinal while the other set is transverse.
AIIMS 2003, Easy
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When beettle moves along the sand it sends two sets of pulses, one longitudinal and the other transverse. Scorpion has the capacity to intercept the waves. By getting a sense of time interval between receipt of these two waves, it can determine the distance of bettle also.
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