A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
E) If the assertion is false but reason is true
Correct Answer: B
Solution :
The ampullae of Lorenzini are found in clusters on the dorsal and ventral surfaces of the head embedded below the skin but opening externally on the surface of the skin. The ampullae of Lorenzini were formerly regarded as neuromast organs but Sand (1938) has proved that these are thermoreceptor organs. The change in the temperature of water is carriedto the brain through the ampullary receptors.
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