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Assistant General Science

Biology – 06

ജീവശാസ്ത്രത്തിലെ കണ്ണ്, ചെവി എന്നിവയുമായി ബന്ധപ്പെട്ട ചോദ്യങ്ങളാണ് ഇന്നത്തെ പാഠത്തിൽ.

  • Study of eyes and eye diseases

Ophthalmology

 

  • Outer layer of eyes

Schlera

 

  • Middle layer of eyes

Choroid

 

  • Inner layer of eyes

Retina

 

  • Layer of eyes which supplies nutrition

Choroid

 

  • Circular transparent front portion of eyes

Cornea

 

  • Lens in eyes

Biconvex lens

 

  • Image formed on the retina of eyes is

Real and inverted

 

  • For normal eyes near point is

25 cm

 

  • Thin covering that protects cornea

Conjunctiva

 

  • Curtain like partition behind cornea

Iris

 

  • Opening at the centre of Iris

Pupil

 

  • Portion that controls the light enters eye

Pupil

 

  • Which is regulating the size of pupil in eyes

Iris

 

  • Light sensitive layers are present in which layer

Choroid

 

  • Ability of eye lens to adjust its focal length is known as

Power of accommodation

 

  • Cells responsible for dim light vision

Rods

 

  • Cells responsible for Bright light vision and color vision

Cone cells

 

  • Owls cannot see during daytime due to the absence of

Cone cells

 

  • Point where no rod and cone cells are present and no image formation happening

Blind spot

 

  • Name of the pigment that helps to see in dim light

Rhodopsin

 

  • Light sensitive pigment of rod cells

Rhodopsin

 

  • Light sensitive pigment of cone cells

Iodopsin

 

  • Jelly like substance filled in between lens and retina

Vitreous humor

 

  • Fluid filled in between Iris and cornea

Aqueous humor

 

  • Focal length of the lens is adjusted by\ligments that hold the lens in place

Ciliary body

 

  • Tear producing glands in eye

Lachrymal gland

 

  • Enzyme present in tears

Lysozyme

 

  • Eye transplantation surgery includes

Cornea, Schlera and vitreous humor

 

  • Cornea transplantation surgery is known as

Keratoplasty

 

  • Short sight is also known as

Myopia

 

  • In case of Myopia, the image is formed at

In front of the retina

 

  • Long sight is also known as

Hypermetropia

 

  • In case of Hypermetropia, the image is formed at

Behind the retina

 

  • Presbyopia is caused by

eduction in the elasticity of the lens

  • Situation in which image is not clearly formed due to the irregular curvature of cornea

Astigmatism

 

  • Squint eyes can be corrected by

Eye surgery

 

  • Myopia can be corrected with

Concave lens

 

  • Hypermetropia can be corrected with

Convex lens

 

  • Both Myopia and hypermetropia can be corrected with

Bifocal lens

 

  • Astigmatism can be corrected with

Cylindrical lens

 

  • Color blindness was discovered by

John Dalton

 

  • Person suffering from Color blindness unable to distinguish

Red and Green colors

 

  • Eye diseases that occur due to the deficiency of Vitamin A

Night blindness and Xerophthalmia

 

  • Loss of vision in dim lights is called

Night blindness

 

  • Eye diseases that occur when iris become dry and opaque is called

Xerophthalmia

 

  • Clouding of eyes due to aging

Cataract

 

  • Eye diseases due to the increased pressure in the eyeball

Glaucoma

 

  • Inflammation or infection of conjunctiva is called

Conjunctivitis or red eyes or Madras eye

 

  • Organ which maintains the balance of the body

Ear

 

  • Part of the ear which helps to hear

Cochlea

 

  • Semicircular canals, Vestibules, Pharynx etc are parts of

Ear

 

  • Part of ear which has the shape of snail shell

Cochlea

 

  • Instrument used for examining outer eardrum

Otoscope

 

  • Hammer shaped bone in ear

Malleus

 

  • Anvil shaped bone in ear

Incus

 

  • Stirrup-shaped bone in ear

Stapes

 

  • Smallest bone in the human body

Stapes


(To be Continued…)