Question

Assertion :Ampullae of lorenzini are found beneath the skin of head region in fishes Reason: Ampullae of lorenzini acts as receptors

• 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. Both Assertion and Reason are incorrect

Answer 1

The correct option is B If both the assertion and reason are true but the reason is not a correct explanation of the assertion

The ampullae of Lorenzini are found in clusters on the dorsal and ventral surfaces of the head embedded below the skin but open to the exterior through the surface of skin.
They were formerly regarded as neurotic organs but Sand (1938) has proved them to be thermoreceptor organs.
The change in the temperature of water is carried to the brain through the ampullary receptors.

So, the correct solution is B 'If both the assertion and reason are true but the reason is not a correct explanation of the assertion'