A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
E) If the assertion is false but reason is true
Correct Answer: B
Solution :
The epithelial tissue forms a continuous layer over the free surfaces of may other tissues. Consequently it covers the external surface of the animal body and the internal (luminal) surfaces of visceral organs, body cavities and blood vessels. Thus it protect the underlying and overlying tissues. Another important function of epithelial tissue is exchange of materials. Through diffusion, osmosis and filtration they can exchange material (e.g. squamous epithelium) found in pulmonary alveoli, Bowman?s capsule etc.
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