Assertion :Lateral-line organs are important in connection with aquatic mode of life. Reason: They are highly supplied with branches of cranial nerves and they are entirely disappeared in terrestrial forms.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Assertion is incorrect Reason is correct.

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Solution

The correct option is C Assertion is correct but Reason is incorrect.
Lateral line organs are the sense organs, mainly found in the aquatic vertebrates from cyclostome fishes to amphibians. It consists receptors for the pressure and helps in detecting the pressure change in the water body. This organ consists modified epithelial cells, known as hair cells, which respond to displacement caused by motion and transduce these signals into electrical impulses via excitatory synapses. Thus, the correct answer is option C.

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