MCQs Test: Special Sense Organ "Eye".

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MCQs Test: Special Sense Organ "Eye".

Quiz

  

Time for this test is 45 minutes.

 

1. The eye is the organ of vision (sight) present in the -------- .
   1.   Orbital cavity.
   2.   Pelvic Cavity.
   3.   Thoracic cavity.
   4.   Peritoneal cavity.
2. ‘White’ of the eye is,
   1.   Cornea.
   2.   Sclera.
   3.   Iris.
   4.   Choroid.
3. Color of eye is due to which layer?
   1.   Cornea.
   2.   Sclera.
   3.   Iris.
   4.   Choroid.
4. A small, pink, globular nodule at the inner corner of the eye which is made of skin covering sebaceous and sweat glands is called as,
   1.   scleral venous sinus.
   2.   lacrimal caruncle.
   3.   Canal of Schlemm.
   4.   Eustachian Tube.
5. Aqueous humour is secreted by,
   1.   Cornea.
   2.   Ciliary Processes.
   3.   Iris.
   4.   Sclera.
6. The ciliary muscle is a circular band of-------.
   1.   smooth muscle
   2.   Skeletal muscle.
   3.   Cardiac muscle
   4.   Mixed muscles.
7. Contraction and relaxation of the ciliary muscle changes the shape of the -------.
   1.   Entire Eye.
   2.   Sclera.
   3.   Iris.
   4.   Lens.
8. Iris contains ------ which determines the colour of the eye.
   1.   Rhodopsin.
   2.   Iodopsin.
   3.   Melanin.
   4.   Scotopsin.
9. The opening in the centre of the iris is called the ------.
   1.   scleral venous sinus.
   2.   lacrimal caruncle.
   3.   Canal of Schlemm.
   4.   Pupil.
10. ------ is a very delicate structure and responsible for stimulation by light rays.
    1.   Cornea
    2.   Retina
    3.   Iris
    4.   Choroid
11. Retina contains sensory receptor cells namely -----------.
    1.   Rod Cells and Cone Cells.
    2.   Cone Cells and Cube Cells.
    3.   Rod Cells and Cube Cells.
    4.   Only Cone cells.
12. The sensory receptor cells which deal with bright light are,
    1.   Rod Cells.
    2.   Cone Cells.
13. Anterior chamber present in between the cornea and the ------.
    1.   Iris.
    2.   Lens.
    3.   Sclera.
    4.   Choroid.
14. The sensory receptor cells which deal with dim light are,
    1.   Rod Cells.
    2.   Cone Cells.
15. Vitreous chamber is present in between the ------ and the retina.
    1.   Iris.
    2.   Lens.
    3.   Sclera.
    4.   Choroid.
16. In myopic eye (short sightedness) light is focused in front of the retina. So this defect can be treated by using a ---- lens.
    1.   Concave.
    2.   Convex.
17. In case of farsightedness, light is focused behind the retina, so no image is formed. This defect can be treated by using a ----- lens.
    1.   Concave.
    2.   Convex.
18. In binocular vision, two eyeballs turn slightly inward to focus a close object so that both images fall on corresponding points on the retina at the same time. This phenomenon is called ----------.
    1.   Convergence
    2.   Accomodation of lenses.
    3.   Myopia.
    4.   Diplopia.
19. Each eye contains -------- rods which are located in the neuro-retina.
    1.   125 Million.
    2.   7 Million.
    3.   125 Billion.
    4.   7 Billion.
20. Each eye contains -------- cone which are located in the neuro-retina.
    1.   125 Million.
    2.   7 Million.
    3.   125 Billion.
    4.   7 Billion.
21. Rod cells contain light sensitive pigment--------.
    1.   Rhodopsin.
    2.   Iodopsin.
    3.   Melanin.
    4.   Scotopsin.
22. Cone cells contain light sensitive pigment--------.
    1.   Rhodopsin.
    2.   Iodopsin.
    3.   Melanin.
    4.   Scotopsin.
23. Retinene (retinal) is a carotenoid molecule and is a derivative of,
    1.   Vitamin A.
    2.   Vitamin B6
    3.   Vitamin C
    4.   Vitamin E.
24. The optic nerves meet at ------- where fibers from the nasal half of each retina cross-over.
    1.   Optic Chiasma.
    2.   Optic Chiasmata.
    3.   Optic Center.
    4.   Fovea centralis.
25. Which photoreceptor cells of the retina deal with colored vision?
    1.   Rod Cells.
    2.   Cone Cells.
    3.   Cube Cells.
    4.   Triangular Cells.