The image formed on the retina of the eye is ....

The lens of the eye and the retina are developed from which embryonic germ layer?

Good vision depends on adequate intake of carotene-rich food. Select the most appropriate option from the following statements.
$I.$ Vitamin $A$ derivatives are formed from carotene.
$II.$ Photopigments are embedded in the membrane discs of the outer segment.
$III.$ Retinal is a derivative of Vitamin $A$.
$IV.$ Retinal is a part of all photopigments that absorb light.

In the human eye,the fovea is the central point of vision,where:

Which of these cells are not found in the retina?

The light-sensitive chemical substance for vision in mammals is called: