Science Class 6th

81. __________ ear helps in maintaining balance of the body.

A. Outer ear

B. Middle ear

C. Inner ear

D. All of these

82. The largest sense organ is?

A. Skin

B. Ear

C. Eye

D. None of these

83. Skin is made up of ________ layers.

A. 1

B. 2

C. 3

D. 4

84. ________ is the outer hard layer of skin.

A. Dermis

B. Epidermis

C. Both (a) and (b)

D. None of these

85. Sweat and oil glands are present in ________ layer of skin.

A. Dermis

B. Epidermis

C. Skin

D. None of these

86. Nerve endings and sensory cells called receptors are present in _________.

A. Dermis

B. Epidermis

C. None of these

87. Which sensory organ helps in making Vitamin D?

A. Eye

B. Skin

C. Ear

D. Tongue

88. About ________ touch receptors are present in your finger tip.

A. 200

B. 300

C. 400

D. 100

89. Passage way of air into lungs is __________.


B. Skin

C. Nose

D. None of these

90. Receptors are located in upper part of________.

A.  Nostrils

B. Throat

C. Lungs

D. None of these

91. Air becomes warm, clean and moisten in________ layer of nostrils.91.

A. Inner

B. Middle

C. Upper

D. None of these

92. At best, our nose can differentiate between _________ smells.

A. 3000-4000

B. 4000-10000

C. 5000-50000

D. None of these

93. As we grow older, sense of smell gets?

A. Strong

B. Weak

C. Neither strong nor weak

94. Tongue has taste receptors called

A. Taste buds

B. Buds

C. Testers

D. Receptors

95. The weakest sense of the five senses is?

A. Sight

B. Smell

C. Taste

D. Hearing

96. We have almost _________ taste buds.

A. 500

B. 50000

C. 800

D. 10000

97. ________ cells are present in sense organs.

A. Receptor

B. Sense

C. Sensitive

D. None of these

98. Salty and Sour tastes are received by _______ of our tongue.

A. Middle

B. Sides

C. Tip

99. Optic nerves take signals to the ________.

A. Brain

B. Nose

C. Eyes

D. Mouth

100. Hearing is helped by?

A.Optic nerves

B. Sensory nerves

C. Auditory nerves

D. Motor nerves