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Biology · PYQ NEET UG 2016(2)

हिन्दी

Choose the CORRECT statement.

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

Correct answer · Option D

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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