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NEET UG BIOLOGY MCQ: NEURAL CONTROL AND COORDINATION
1
Hard
1 of 1
Understanding
+4 | -1
How many of the following statements are correct
(i) Photoreceptors in the human eye are depolarised during darkness
(ii) Receptors produce graded potentials
(iii) Retinal is a light absorbing part of all the visual photopigments
(iv) Photopigments are embeded in the membrane discs of the outer segment
(i) Photoreceptors in the human eye are depolarised during darkness
(ii) Receptors produce graded potentials
(iii) Retinal is a light absorbing part of all the visual photopigments
(iv) Photopigments are embeded in the membrane discs of the outer segment
View answer and explanation
Correct option: A
4
Option A (4) is correct because all four statements about photoreceptors and visual photopigments are accurate.
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I. It screens sensory information
II. It is important in overall activation and arousal
III. It is concerned with involuntary movements
IV. It is the seat of learning, memory, reasoning and creative ability Which of the following neuron is also called excitor neuron?