MEDIUM
Earn 100
Which one of the following is the correct difference between rod cells and cone cells of our retina?
Rod cells
Cone cells
1
Vision in poor light
Colour vision and detailed vision in bright light
2
More concentrated in centre of retina
Evenly distributed all over retina
3
Low in number
High in number
4
lodopsin
Rhodopsin
50% studentsanswered this correctly
Important Questions on Neural Control and Coordination
HARD
Choose the correct statements.
EASY
The photosensitive compound in the human eye is made up of:
EASY
Which statement is CORRECT regarding blind spot in human eye?
It ___________.
MEDIUM
Which one of the following statements is not correct?
EASY
How do Rods and Cones of human Dye differ from each other chemically and functionally ?
MEDIUM
Short sightedness in humans can be corrected by using:
EASY
In a blind spot of 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
In the mammalian eye, the 'fovea' is the the center of the visual field, where:
MEDIUM
A gymnast is able to balance his body upside down even in the total darkness because of:
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
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?
EASY
Which of the following statements is correct?
EASY
The transparent lens in the human eye is held in its place by
EASY
Which one of the following parts of the eye is affected in cataract?
EASY
In mammals, quadrate is modified as
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
Study the following diagram of human tongue and identify the part I, II, and III
HARD
Light sensitive rod cells are responsible for
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 |
