Asserion: When a beetle moves along the sand within a few tens of centimeters of a sand scorpion, the scorpion immedeately turn towards the beetle and dashes to it.
Reason: When a beetle disturbs the sand, it sends pulses along the sand surface one set of pulses in londitudinal while other set is transvers.

Options

A. If the both assertion and reason are true and the reason is the correct explanation of the assertion
B. If both assertion and reason are true and the reason is not the correct explanation of the assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false statements.

Answer

A

Explanation

A beetle's motion sends fast longitudinal and slower transverse waves along the sand's surface. The sand scorpion intercepts the longitudinal waves first and of the eight legs of the scorpion is disturbed first by the pulses . Then the scorpion dashes towards the beetle to catch it