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Biology · PYQ NEET UG 2016(2)

हिन्दी

Choose the CORRECT statement.

  1. Receptors do not produce graded potentials.
  2. Nociceptors respond to changes in pressure.
  3. Meissner's corpuscles are thermoreceptors.
  4. Photoreceptors in the human eye are depolarized during darkness and become hyperpolarized in response to the light stimulus.

Correct answer · Option 4

Photoreceptors in the human eye are depolarized during darkness and become hyperpolarized in response to the light stimulus.

Explanation

In the dark, photoreceptors release inhibitory neurotransmitters due to depolarization; light stimulus causes hyperpolarization and cessation of transmitter release.
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