The photosynthetic pigments,viz.,erythrolabe,chlorolabe,and cyanolabe,respectively,are:

In the following abnormalities of the eye, which one is a serious condition that leads to blindness?

Which of the following are functions of the cone cells of the retina?
$1.$ Photopic vision
$2.$ Colour vision
$3.$ Scotopic vision

Which one of the following is the correct difference between rod cells and cone cells of our retina?

How many oblique and rectus muscles are present for the movement of the eyeball in various directions within the eye orbit?

Label the following parts in the given diagram of the human eye:
$(a)$ Aqueous chamber
$(b)$ Cornea
$(c)$ Lens
$(d)$ Retina
$(e)$ Vitreous chamber
$(f)$ Blind spot.