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  • Good vision depends on adequate intake of carotene rich food. Select the best option from the following statements. <ol sty

Good vision depends on adequate intake of carotene rich food. Select the best option from the following statements.

  1. Vitamin 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.
Option: 1

(a) and (b)


Option: 2

(a), (c) and (d)


Option: 3

(a) and (c)


Option: 4

(b), (c) and (d)


Answers (1)

best_answer

 

 

As we have learnt in the mechanism of Vision -

- 

 

  • The retina of the eyes has proteins called opsin which binds to the retinal.
  • Retinal is the light-sensitive pigments.
  • Vitamin A is necessary for the production of retinal, a component of rhodopsin.
  • Rhodopsin is required for sensing dim light.
  • Since deficiency of vitamin A leads to inadequate production of retinal it results in poor vision.
  • Carotenes are the pigments present in red-orange fruits and vegetables.
  • Carotenes synthesize vitamin A derivatives. 

Hence, the correct answer is option d.

Posted by

Divya Prakash Singh

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