Q. The amount of light which enters the eye is controlled by

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Q. Night blindness is a disorder for

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Q. The spot over the optic nerve is blind as it has no

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Q. The dead, dry and flat shaped cells are present in the layer

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Q. The contraction and dilation of arteries help to regulate the body

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Q. The layer of epidermis having pigments is

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Q. Vasodilation is the

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Q. For increasing heat loss, hair muscles should

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Q. As cornified layer is water resistant it prevents

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Q. Human skin act as regulator and as on organ of

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Q. Cold blooded animals do not have a constant level of

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Q. Milk glands are modification of

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Q. As a result of vasodilation skin receives more

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Q. Under the dermis, several layers of adipose tissue for storage of

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Q. Less amount of heat will be lost as the sweat glands are

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Q. Arterioles in the skin allow more blood to flow through skin by

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Q. The large size of ears of elephant gives

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Q. Fur is absent in whale as it lives in

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Q. The skin hair grow inside a hollow tube called

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Q. The fibrous connective tissue are present in

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