1 - A person having deficiency of rhodopsin should take:
Carrots
2 - A slight accommodation in frog's eyes can be brought about by:
Protractor lentis muscles
3 - At rest the mammalian eye is focused for distant objects by:
Relaxation of ciliary muscles which flattens the lens and enables it to have maximum focal length
4 - Common defect developing in the eyes of persons of old age is:
Hypermetropia
5 - Common eye defect that develops in old age is:
Presbyopia
6 - Cone cells in our eyes are of three types for three basic colours namely:
Red, green and blue
7 - Duration of temporary blindness on going suddenly from brightness to dark and vice-versa in our eyes is for:
1-2 seconds
8 - During change in our body balance, the otoconia of endolymph stimulate the cells of:
Macula utriculi
9 - During night the slow intensity of light is detected by:
Crystalline lens
10 - Focal length of lens is controlled by:
Ciliary muscles
11 - Frog's eyes are capable of:
Slight accommodation
12 - Glare due to tepatum layer in the eyes of certain mammals helps to:
Perform both of these functions
13 - Hypermetropia is a condition in human eyes in which the image is formed:
In front of retina and can be corrected by using convex lenses
14 - If light source in front of our eye suddenly becomes bright, then:
We have a temporary blindness for 10-30 seconds during which pupil constricts
15 - Impulses of gravitational disturbances are responded by:
Macula utriculi
16 - In bright light rhodopsin:
Disappears or is reduced
17 - In the eyes of hoofed mammals, elephant, whales etc, is found:
Tepatum fibrosum
18 - In water the frogs are:
Hypermetropic
19 - In which of these eye defects the anteroposterior diameter of the eye ball is short:
Hypermetropia
20 - In which of these eye defects the lens looses its transparency and the defect occurs at the aging:
Cataract
21 - Increase in intraocular pressure of aqueous humour results in development of:
Glaucoma
22 - Iodopsin is also called:
Visual voilet
23 - Least distance vision for a person of hypermetropia is:
25 cms
24 - Lenses to be used by a person who cannot see distant objects are:
Concave
25 - Lenses used by the persons who cannot see objects of nearby are:
Convex
26 - Mammalian eyes have remarkable power of accommodation by:
Capability to change the convexity of lens which changes its focal length
27 - Myopia is a defect in human eyes in which image is formed:
In front of retina and can be corrected by using concave lenses
28 - Night blindness is caused by:
Deficiency of rhodopsin
29 - Night blindness is due to the deficiency of:
Vitamin-A
30 - On land frogs are:
Myopic
31 - Opacity of lens interfering in the transmission of light to retina is seen during:
Cataract
32 - Owing to reduction of the diameter of eye ball the retina comes close to lens and the light rays strike the retina before they have converged again resulting in blurred image, this defect is called:
Hypermetropia and generally occurs with the aging
33 - Phtosensitive pigment is:
Similar in all vertebrate eyes
34 - Pressure of vibrations received by membrane of fenestra ovalis are received by perilymph present in:
Scala Vestibuli
35 - Rhodopsin is a pigment found in:
Retinal cells
36 - Rhodopsin is also called:
Visual purple
37 - Rhodopsin is related to:
None of these
38 - Stato acaustic impulses are transmitted to brain by which of these nerves:
VIII cranial nerve
39 - Tepatum callulosum is found in the eyes of:
Carnivores
40 - Tepatum fibrosum is found in the eyes of:
All of these
41 - Tepatum lucidum is found in the eyes of:
Deep sea fishes
42 - The diameter of eye ball in an adult man is:
20-21 cms
43 - The disappearance of rhodopsin is an adaptation in:
Diurnal animals
44 - The nerve centre for sight is located in:
Both (a) & (b)
45 - The pigment that helps some nocturnal animals to see during night is:
Guanin
46 - The reformation of rhodopsin is an adaptation in:
Nocturnal animals
47 - Visual pigment in the cone cells of our eyes is:
Iodopsin
48 - Visual pigment in the rods of our eyes is:
Rhodopsin
49 - When the near objects are to be focused by our eye then the:
Ciliary muscles are contracted and lens becomes maximum convex
50 - Which equilibrium is concerned with the orientation of the animal at rest:
Kinetic equilibrium
51 - Which of the following organs is involved to help us feel the earthquake:
Ear
52 - Which of these is a balancing organ:
Ear
53 - Which of these structures of ear are associated with kinetic equilibrium:
Crista ampullaris
54 - With the change in the intensity of light from one to one hundred the response of our eye will be increased by:
0.01
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