Science Class 6th

61. Small opening in Iris is called?

A. Lens

B. Pupil

C. Choroid

D. None of these

62. Lens lies behind the _______?

A. Chornea

B. Choroid

C. Pupil

D. All of these

63. Middle layer of eye is?

A. Choroid

B. Sclerotic

C. Eye ball

D. None of these

64. The color of choroid is?

A. White

B. Brown

C. Black

D. Red

65. Blood vessels which brings nutrients and oxygen to eyes is present in?

A. Sclerotic

B. Choroid

C. Eye

D. None of these

66. _______ is the inner most layer of eye ball.

A. Retina

B. Choroid

C. Eye

D. None of these

67. The image of the object is formed on?

A. Choroid

B. Retina

C. Sclerotic

D. None of these

68. Which part of the eye is made up of sensory cells?

A. Eye ball

B. Sclerotic

C. Retina

D. None of these

69. _______ take signals to the brain to see objects

A. Choroid

B. Lens

C. Retina

D. Optic Nerves

70. Light enters to the eye through

A. Cornea

B. Choroid

C. Sclerotic

D. All of these

71. ________ image is formed on Retina

A. Upright

B. Retina

C. Inverted

D. None of these

72. Funnel like structure in ear is called ________.

A. Canal

B. Ear

C. Pinna

D. None of these

73. A membrane present in ear is called ________.

A. Cell membrane

B. Plasma membrane

C. Ear drum

D. All of these

74. Three tiny bones present in ear are called?

A. Ossicles

B. Bones

C. Ear bones

D. Small bones

75. Ossicles vibrate with the vibration of?

A. Ear

B. Sound

C. Ear drum

D. Song

76. Semi circular and coiled structure in ear is called?

A. Cochlea

B. Bones

C. Structures

D. None of these

77. Cochlea is present in?

A. Middle ear

B. Inner ear

C. Outer ear

D. Ear

78. Cochlea is filled with?.

A. Gas

B. Fluid

C. Both (a) and(b)

D. None of these

79. Tiny hair cells connected with auditory nerves is present in?

A. Outer ear

B. Inner ear

C. Middle ear

80. Smallest bones in the body are?

A. Eye bones

B. Finger bones

C. Ear bones

D. Toe bones