Normal wear and tear of cells in simple epithelia is negligible because
Epithelial cells are very tough
Epithelial cells are closely fitted like tiles of a mosaic
Epithelial cell are kept moist due to the material that diffuse through it
Epithelial cell is protective in function
A
Epithelial cells are closely fitted like tiles of a mosaic
B
Epithelial cell is protective in function
C
Epithelial cells are very tough
D
Epithelial cell are kept moist due to the material that diffuse through it
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Solution
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Epithelial cells form the diffusion boundary at many places including as in nephron and alveoli and are actively involved in absorption and secretion. Hence, they are closely associated with movement of molecules across it, which help to keep it moist and prevent any normal wear and tear due to chemical or mechanical stress.
So, the correct option is 'Epithelial cell are kept moist due to the material that diffuse through it'.
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