EASY
Earn 100
Iris of an eye is an extension of
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Important Questions on Neural Control and Coordination
HARD
Which of the following statement is correct?
(i) The rods contain a purplish-red protein called the rhodopsin.
(ii) The photopigments are embedded in the membrane discs of the inner segment.
(iii) Retinal is a derivative of vitamin A.
(iv) Light induces dissociation of the retinal from opsin resulting in changes in the structure of the opsin.
EASY
In the mammalian eye, the 'fovea' is the the center of the visual field, where:
MEDIUM
Short sightedness in humans can be corrected by using:
MEDIUM
Match the following columns and select the correct option:-
| Column | column | ||
| (a) | Rods and cones | (i) | Absence of photoreceptor cells |
| (b) | Blind spot | (ii) | Cones are densely packed |
| (c) | Fovea | (iii) | Photoreceptor cells |
| (d) | Iris | (iv) | Visible coloured portion of the eye |
MEDIUM
Write one function of Sclera of the human eyeball.
MEDIUM
Which one of the following statements is not correct?
HARD
Choose the correct statements.
EASY
Which statement is CORRECT regarding blind spot in human eye?
It ___________.
MEDIUM
Write one function of Retina of human eyeball.
MEDIUM
Match List I with List II:
|
List I |
List II |
| A. Fovea | I. Visible coloured portion of eye that regulates diameter of pupil. |
| B. Iris | II. External layer of eye formed of dense connective tissue. |
| C. Blind spot | III. Point of greatest visual acuity or resolution. |
| D. Sclera | IV. Point where optic nerve leaves the eyeball and photoreceptor cells are absent |
Choose the correct answer from the options given below:
EASY
Which one of the following parts of the eye is affected in cataract?
EASY
Which of the following acts as a light sensitive screen in the Human eye?
EASY
Consider the following vision defects listed in Columns I and II and the corrective measures in Column III. Choose the correct combination.
| P. | Hypermetropia | Near-sightedness | a. | Convex lens | |
| Q. | Myopia | (ii) | Far-sightedness | b. | Concave lens |
EASY
Which of the following statements is correct?
EASY
When one goes from a brightly lit area to a dimly lit room our eyes adjusts slowly, thereby regaining the clarity of vision. Which ONE of the following explains this process?
MEDIUM
Scientists find a gene that helps human peripheral neurons to sense temperature less than and induce a physiological signal of avoidance. This gene is present in almost all vertebrates. Considering that gene has role only in detection of low temperature, the correct statement(s) is(are)
EASY
The transparent lens in the human eye is held in its place by
EASY
The photosensitive compound in the human eye is made up of:
EASY
On which part of the eye does the human eye form the image of an object?
EASY
In a blind spot of the human eye
