Which one is present in integument of frog but not in mammals?
A
Sweat glands
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B
Dermis
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C
Stratum germinativum
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D
Mucous glands
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Solution
The correct option is D Mucous glands Fishes and amphibians like frog have a mucus layer secreted by mucous glands for bacterial and mechanical protection and to prevent drying on land. The mucous also aids in cutaneous respiration by not letting the skin to get dry.