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41.

Glare due to tepatum layer in the eyes of certain mammals helps to:

A.	Act as aggressive mechanism	B.	Increase the stimulation of retinal cells
C.	Perform both of these functions	D.	Perform none of these functions

42.

The diameter of eye ball in an adult man is:

A.	10-15 cms	B.	15-20 cms
C.	20-21 cms	D.	None of these

43.

In which of these eye defects the anteroposterior diameter of the eye ball is short:

A.	Hypermetropia	B.	Myopia
C.	Astigmatism	D.	None of these

44.

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:

A.	Hypermetropia and generally occurs with the aging	B.	Myopia in which one can see only nearby objects
C.	Astigmatism in which light in one plane is focused in other plane	D.	None of these

45.

In which of these eye defects the lens looses its transparency and the defect occurs at the aging:

A.	Hypermetropia	B.	Myopia
C.	Astigmatism	D.	Cataract

46.

Increase in intraocular pressure of aqueous humour results in development of:

A.	Cataract	B.	Glaucoma
C.	Astigmatism	D.	None of these

47.

Opacity of lens interfering in the transmission of light to retina is seen during:

A.	Astigmatism	B.	Cataract
C.	Strabismus	D.	None of these

48.

Which of these is a balancing organ:

A.	Eye	B.	Ear
C.	Both (a) & (b)	D.	None of these

49.

Which equilibrium is concerned with the orientation of the animal at rest:

A.	Kinetic equilibrium	B.	Static equilibrium
C.	Both (a) & (b)	D.	None of these

50.

During change in our body balance, the otoconia of endolymph stimulate the cells of:

A.	Macula utriculi	B.	Scala media
C.	Scala vestibuli	D.	None of these