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प्रश्न
Why are the epithelial tissues that line an animal’s internal organs usually only one or a few cells thick?
पर्याय
To store food efficiently.
To provide maximum strength.
To allow quick exchange of materials across them.
To reduce friction.
MCQ
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उत्तर
To allow quick exchange of materials across them.
Explanation:
Internal organ epithelial tissues are only one or a few cells thick, allowing gases, nutrients, and wastes to diffuse quickly. Thin layers provide fast material exchange due to their narrow diffusion paths.
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