NEETBiologyNeural Control and CoordinationMCQ+4 / −1
Good vishion depends on adequate intake of carotene rich food.
Select the best option from the following statements.
(1) Vitamins A derivatives are formed from carotene,
(2) The photopigments are embedded in the membrane discs of the inner segment.
(3) Retinal is a derivative of vitamin A.
(4) Retinal is a light absorbing part of all the visual photopigments.
Select the best option from the following statements.
(1) Vitamins A derivatives are formed from carotene,
(2) The photopigments are embedded in the membrane discs of the inner segment.
(3) Retinal is a derivative of vitamin A.
(4) Retinal is a light absorbing part of all the visual photopigments.
- A(1), (3) and (4)
- B(1) and (3)
- C(2), (3) and (4)
- D(1) and (2)
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Correct answer: A
Vitamins A derivatives are formed from carotene which is a type of pigment that is found in certain foods, such as carrots, sweet potatoes, and spinach. The body converts carotene into vitamin A, which is essential for good vision.
Retinal is a derivative of vitamin A and it is a light-absorbing part of all the visual photopigments. Photopigments are embedded in the membrane discs of the inner segment of the rod and cone cells in the retina.
Therefore, options (1), (3), and (4) are correct.
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