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Question

Assertion :Simple epithelium covers surfaces exposed to mechanical or chemical abrasions. Reason: Protection of underlying issues is the major function of the simple epithelium.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
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C
Assertion is correct but Reason is incorrect.
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D
Both Assertion and Reason are incorrect.
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Solution

The correct option is D Both Assertion and Reason are incorrect.
Simple epithelium doesn't cover surfaces exposed to mechanical or chemical abrasions, because it is made up of a single layer of cells, hence it is not effective in protecting the underlying tissue. Simple epithelium tissue is found in the lining of oesophagus, blood vessels, etc.
There is another type of epithelial tissue called stratified squamous epithelium which being multilayered is effective in providing protection to underlying tissue and hence, covers the surfaces exposed to mechanical and chemical abrasions. This tissue is mainly found on the skin.
So, the correct answer is option D.

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