Quiz  /  NEET Structure of Eye MCQ Quiz

  • 1. 
    The main function of the cornea present in the human eye is

  • structural support to the eye
  • bends light before it reaches the lens
  • changes the shape of the lens enabling image to be focused on the retina
  • contains a concentrated amount of cone cells on the correct orientation

  • 2. 
    The type of cells found in retina are

  • Purkinje cells
  • Schwann cells
  • Neuroglial cells
  • Amacrine cells

  • 3. 
    Where will the image of a distant object be formed when a person using a concave lens to correct vision, is not using glasses?

  • behind retina
  • in front of the retina
  • on the blindspot
  • on the yellow spot

  • 4. 
    A cornea transplant is never rejected in humans because

  • it consists of enucleated cells
  • it is a non-living layer
  • it has no blood supply
  • its cells are least penetrable by bacteria

  • 5. 
    This is an incorrect statement

  • rhodopsin is the purplish-red protein situated in rods only
  • Retinal is a derivative of Vitamin C
  • Retinal is the light-absorbing part of visual photopigments
  • the rods in the retina have rhodopsin, a photopigment while cones have three different photopigments

  • 6. 
    The fovea is the mammalian eye is the centre of the visual field wherein

  • the optic nerve exits the eye
  • only rods are found
  • more rods than cones are found
  • no rods but a high density of cones occur

  • 7. 
    In the human eye, the photosensitive compound is composed of

  • guanosine and retinol
  • transducin and retinene
  • opsin and retinol
  • opsin and retinal

  • 8. 
    The eye lens is

  • Concave
  • Convex
  • Biconcave
  • Biconvex

  • 9. 
    The persistence of vision for the human eye is

  • 1/6th of a second
  • 1/10th of a second
  • 1/16th of a second
  • 1/18th of a second

  • 10. 
    What does the tapetum lucidum do?

  • it is the coloured part of the eye
  • gives animals night vision
  • transparent jelly-like fluid
  • it is the area where the optic never attaches

  • 11. 
    The innermost layer and the most delicate layer of the eyeball where the photoreceptors are located are

  • Chloroid
  • Sclera
  • Cornea
  • Retina

  • 12. 
    This part of the eye dilates and contracts based on the environment

  • Sclera
  • Cornea
  • Lens
  • Pupil

  • 13. 
    The transparent lens in the human eye is held in its place by

  • smooth muscles attached to the iris
  • ligaments attached to the ciliary body
  • ligaments attached to the iris
  • smooth muscles attached to the ciliary body

  • 14. 
    The eye of octopus and the eye of cats show different patterns of structure, yet they perform similar functions This is an example of

  • Homologous organs that have evolved due to convergent evolution
  • Homologous organs that have evolved due to divergent evolution
  • Analogous organs that have evolved due to convergent evolution
  • Analogous organs that have evolved due to divergent evolution

  • 15. 
    Which of these colours is least scattered by dust, fog, smoke?

  • Yellow
  • Red
  • Blue
  • Violet
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